Struggling with Physical Chemistry? 🔥 Score 60 Marks with This Sure Shot Strategy #NEETChemistry

Added: 2026-05-04

[00:00:00]Hello students. So very good morning. In today class we are exclusively as I told already we are completely going to discuss physical chemistry. So the first thing all the students will ask sir the session time. So the session is of about 2 and a half to 3 hours duration. So in that duration I am just going to I will try my level best to complete the entire physical chemistry of yes class 11th as well as 12th class. So is everyone is ready? So before that Rabin Ahmadi HV1 yeah Ana Subashri Fzana Muhammad very good morning my dear students. So now shall we get into the session? Okay, before getting into today class, I just want to know only one thing from you my dear students. Tell me honestly the last two marathons of chemistry. The last two marathons if you look at the timing it it is of around 10 hours 10 hours duration I completed the organic chemistry part of class 11th as well as class 12th. Now when it comes to this particular topic physical chemistry how exactly I'm going to approach means first what are the physical chemistry topic we are having in our syllabus if I talk about class 11th and then class 12 the first physical chemistry topic from class 11 what is the first physical chemistry topic we are having is atomic structure Yes, the first physical chemistry topic what we are having is atomic structure followed by atomic structure periodic table and then all those things chemical bonding everything will come under inorganic chemistry low confidence for physical chemistry no it will be very easy listen to class I'm just always my class is all about strategical approach no need to read everything so listen carefully atomic structure followed by mole concept that is basic concept of chemistry.

[00:02:13]Basic concepts of chemistry.

[00:02:17]Then if I talk about equilibrium, equilibrium followed by thermodynamics then redux reaction from class 11 we are having only these five topics.

[00:02:43]So we are having hi sir hi Andre very good morning. So these five topics we are having from class 11.

[00:02:50]If I talk about class 12 chemistry, if we talk about class 12 chemistry, the first chapter is solution.

[00:03:03]Next followed by that electrochemistry.

[00:03:10]Then the last one is chemical kinetics.

[00:03:18]Since we are running out of time, honestly speaking, we are having less than 10 days actually time. Right? Today is 25th then May 3rd is our examination.

[00:03:30]Then you guys can able to calculate approximately we are having only a week time. Now tell me in this week time if I start explaining each and everything do you guys think it is possible it will be very tough. So organic chemistry yeah out of 60 if those two marathon if few people would have listened easily each and every one of you can able to score 45 plus because A to Z everything I discussed in organic chemistry. Yeah only six days we are having now for this what is the approach I just want to tell you my dear students no need to read everything don't break your head by reading everything very simple if I talk about a neat paper we know total marks in chemistry is 180 marks in that for sure 60 marks will come from inorganic chemistry 60 marks from physical chemistry 60 marks from organic chemistry.

[00:04:42]Yes. Are you good morning? Why this much actually?

[00:04:50]Yeah. So very happy morning. Now we know very well from 60 marks we will get from physical chemistry. To ask this 60 marks from physical chemistry how many questions is required? The question paper need to ask only 15 question right only 15 question we will get from physical chemistry. Now how many chapters we are having? 5 + 3 eight chapters we are having. So minimum if I keep two question from this chapter minimum two question easily we can able to attempt all 15 question. Now tell me one thing even Ambika ma'am will be always telling this even subrits also will be telling this when it comes to neat examination 50%age of syllabus is biology 50%age of syllabus is biology so in these last 7 to 8 days the crucial part is again and again we need to revise the biology part honestly I'm telling if you guys can able to score 350 plus in biology then chemistry physics together if you score 260 also easily you guys can able to get the medical state because score will be almost near to 600. Yeah, you will be getting GMC but the problem is to score the 240 or 260 mark we are struggling a lot. So in chemistry 150 160 if you score that is more than sufficient. So my strategy is what are all the topics you guys must need to do means don't miss the chapter of atomic structure because in atomic structure you guys can expect minimum two question if the question paper setter is very good you guys can expect even three questions also. So minimum two question it is guaranteed from atomic structure for to get those two question what are the concepts everything I'm going to tell listen carefully apart from that don't miss the redox reaction chapter short one question is confirm from redox one question is confirm from redox reaction so definitely you people will get one question from redox reaction then equilibrium sir equilibrium is very tough sir I I don't know how to calculate PS that's why my dear students throw that off but we will be getting one question based on KPKC or leier principle am I right whoever the question papers setter definitely sure shot short we will be getting one question from KPK equilibrium constant now thermodynamics s it is very tough sir thermodynamics No my dear students in thermodynamics do only one thing basic terminology you guys read definitely you will get you guys will get one question basic terminologies now I will write in atomic structure what are the points you guys need to focus in equilibrium what thermodynamics what redux what apart from this basic concept of chemistry solution electrochemistry chemical kinetics give preference to electrochemistry and chemical kinetics Electrochemistry is one of the easy chapter. We will get direct question based on n equation, direct question based on faradays law or direct question based on molar conductance, equivalent conductance, resistant conductivity all those calculation part. So here you guys can able to write two question.

[00:08:28]Yes, apart from the chemical kindics order half-life arinous equation very simple direct question directly you guys can able to attempt two question. Now basic concepts of chemistry short we will be getting one question based on mole concept one question will be there based on mole concept now when it comes to solution to short if you don't know RLVP whatever no one question will be based on van factor so now I will tell because majority of the students are feeling very tough when it comes to physical chemistry part honestly I'm telling listen carefully to get this two question in atomic structure focus on bore derivation part bore derivation part apart from that hydrogen spectrum quantum numbers node more than sufficient my dear students more than sufficient In basic concept of chemistry I will come later in solution to attend that one question focus on vanto factor if possible along with vanto factor you guys can [laughter] okay why mood of subashri what happened so when it comes to solution we can expect question from van factor along with that read osmotic pressure also osmotic IC pressure.

[00:10:10]Then now I will tell to attempt chemical kinetics 2 question integrated rate expression.

[00:10:23]Apart from that halflife the main the major thing is arinius equation.

[00:10:30]Sure short shot short you guys can expect question from arinius equation.

[00:10:37]Now when it comes to electrochemistry as I told you guys need to focus on nurse equation followed by cold rash law that is infinite dilution apart from that you guys need to focus on remaining the law of electrolysis I'm not writing here but remember resistance conductance all those formulas Okay. When it comes to thermodynamics, read only the basic terms.

[00:11:14]Read only the basic terms. When it comes to equilibrium, stick to KPKC expression and then Lee Chatier principle.

[00:11:29]Lee Chatlier principle in basic concepts of chemistry based on mole calculation we will get no no ammo I didn't do that no today only in another batch actually I'm having that I'm just going to do it so in basic concepts of chemistry do question based on basic Basic mole concept question basics mole related numericals or else focus on limiting reagent like they may ask which of the following is having more molecules which one is the which of the following is having very less molecule. So if you guys read these topics when it comes to redux we know very well balancing related question will be there or oxidation state very simple chapter I and see whatever the number of question I given here is minimum question minimum short short question who knows the question paper setter may ask high level of question also that is the possibility is there here whatever the question I mentioned is very very short short minimum question minimum number of question what is the minimum number of question I can expect in one question but if the question paper is easy honestly chemistry paper will be easy my dear students so you guys can expect automatically two to three question also who knows but let us imagine paper will be tough first paper in that perspective we will prepare so if you prepare only these topics how many question you guys can able to attempt 2 3 4 5 6 7 8 19 11 So out of 15 question you guys can easily able to attempt 11 [clears throat] question. Now tell me 44 marks in physical chemistry from my lecture of organic chemistry 45 marks.

[00:13:35]So here itself we almost we scored 90 marks. Now from inorganic chemistry if we score again automatically our score is 140 in chemistry 140 in chemistry 140 in physics 360 out of 316 biology GMC is guaranteed but the problem here is till the last moment we will be keep on focusing on till the last moment we will be keep on focusing on um sir in physical chemistry thermodynamics will come I will read in physics also thermodynamics my question in this last seven days why you guys are wasting your precious time by sitting in the unwanted topics. We know very well in solution other than mant factor osmotic pressure osmotic pressure RLBP numerical will be there but they may complicate it. The question paper set if they want to frame a tough paper they may bring J advanc RLBP numerical into the question paper. You guys tell me how it is possible for us to solve. It will be really tough.

[00:14:36]So that is what my dear students everybody getting an idea. So yes Ana everyone very good morning sorry sir I'm late hey it's fine no problem. to these topics only these topics is sufficient directly I'm telling this is the minimum question guaranteed minimum question if you people want I will write and sign and give this is the minimum question we can expect 11 question this is the minimum again I'm telling you even you people know very well I know very well equilibrium only one question KP KC char principle who knows if we get PH related question we know all the formulas In class I discussed all the formulas. Vignesh, good morning sir.

[00:15:22]Good morning Vign.

[00:15:24]Yes in class already we solved all the formulas. Now tell me one thing.

[00:15:29]Whatever the topics I written here. You people know these topics. Now when it comes to physical chemistry to solve question no need of topics. Sir I do this as I am at zero in physical chemistry. Will I get 60 marks? No you won't get 60 marks. You will get only 44 marks. 44 is the minimum. If question paper is tough, you will get 44 marks.

[00:15:51]If the question paper is easy, you will be getting 45 plus. Who knows? 50 also possible.

[00:15:58]Right? Now tell me these topics each and every one of you know or not. Yes. Now no need honestly telling I'm talking about concept to solve physical chemistry question. No need of concept only. My dear students the concept and all we required to score full marks in our CBSC board examination to score full marks in our state board examination whether you are from Karnataka or Tamil Nadu Andhra Pradesh whatever intermediate college what PU whatever it is but one thing you guys need to be very very clear to solve this question if we have some basic idea that is more than sufficient so in today class now what I'm going to do means in a very very selected way I am having some top questions from physical chemistry I'm just going to give those question try to solve okay I'm just going to give those top level question try to solve from these topics mainly from these chapters all physical chemistry chapters I written for some students thermodynamics what I did here I am telling only 44 marks but in The same channel one strategy video I did for thermodynamics I given one tableabler column with the help of that you guys can able to solve complicated numericals also for redux I just given balancing trick I just given the balancing trick how to solve redux reaction in the first marathon of 10 hours this is there in the strategy video in this particular channel if you go and search in the video section you guys can able to see the stabler column with the help of that not this one question one more question will come that question also you guys can able to solve redux balancing trick I told clearly apart from this in equilibrium what I given all the pH formula in my first marathon 10 hours class I given all the pH formula how to remember how to solve question based on buffer solution salt hydraysis everything I given Right? So honestly telling if you people followed me properly you guys can able to score 60 out of 60 but in the last moment at least give importance to these topics and then prepare well and then yeah really sir I didn't watch it yes really thermodynamics will be there one simple table column with the help of that you guys can able to score marks redux balancing trick I in first marathon 10 and a half marathon this also in the first marathon I Clearly explained everything right now is everyone is ready to solve questions based on this or you guys want me to once again revise the formula.

[00:18:53]Tell me honestly sir take atomic structure revise the formula then we will solve question. Take equilibrium revise the formula then we will solve question like that you people want me to continue this class or directly shall we start solving question. Tell me my dear students or directly shall we do question quick please do tell me what we will do.

[00:19:27]Yes.

[00:19:29]Need to revise sir. Others personana revise formula sir. Sicily.

[00:19:36]Yes sir.

[00:19:38]Yes sir. For what? Revising formula.

[00:19:45]Yes. Okay. So in a very precise way I'm going to revise the formula. Nothing like beating around the bush. Nothing.

[00:19:52]Revise formula sir. Reise formula sir.

[00:19:54]Okay. Now I will take one topic. I will revise the formula then we will continue with the things. Okay. Yes. Revise and solve together. Okay. Okay. That's good.

[00:20:05]Fine. So now I will take these are all the topics is very important. I will take one particular chapter. I will give all the formulas in a very precise way.

[00:20:14]Then we will solve question. Honestly I'm telling whatever the formulas I'm going to give. No, please do make a note of it. That is more than sufficient.

[00:20:21]Even in my absence you guys can able to solve question. Even in my absence you guys can able to solve question. So please do make a note of all the list of formulas whatever I'm going to write.

[00:20:32]Clear? Perfect. Now let me start first thing first I'm going to start with atomic structure first thing is atomic structure what we discussed in atomic structure board derivation hydrogen spectrum quantum number node from these we can expect questions but now when it comes to formula discussion I will be just giving all the things I just going to give all the things please do make a note of it.

[00:21:10]First first thing when it comes to atomic structure what is the major thing we need to remember mass of proton who knows they may ask question from this also mass of proton is 1.67 67 into 10 ^ -27 kg. This is the mass of proton in amu. If I want to write how I will write mass of proton is 1.0075 amu. In the same way if I talk about anode ray remember one thing very very important when it comes to anode ray what we can able to tell E by M ratio. E by M ratio is remember this very important E by M ratio is independent E by E by M ratio is independent of nature of gas taken in discharge tube.

[00:22:08]Nature of gas a canine discharge tube. This is all about anode rate. Next when it comes to neutron what is the mass of neutron?

[00:22:27]Yes mass of neutron what we can able to tell 1.67 into 10 ^ -27 kg. In the same way what will be its mass? Mass of neutron in terms of amu that will be 1.085 amu. Let me represent neutron in small n only mass of neutron mass of neutron apart from this then electron mass of electron is 9.1 into 10 ^ - 31 kg. Then if I want to write normally in amu units mass of electron will be 0.0549 amu. It is clear. So these are all the values very important. Maybe we can expect question from AR type statement type question. Whenever those type of question comes we can expect these models mass of electron mass of neutron and then mass of proton and ray. Now when it comes to atomic model remember one thing very very important when it comes to ruther for model of an atom.

[00:23:35]What exactly we know from ruther Ford model of an atom?

[00:23:46]What exactly we know? This is very very important. Rn that is radius of nucleus will be equal to R into a power 1 by3.

[00:23:58]What is Rn? Rn represents radius of nucleus.

[00:24:03]rn represents radius [snorts] of nucleus. In the same way a represents A represents mass number. What is the value for R? R value is 1.33 into 10 ^ -3 cm. Remember the units my dear students. This is where majority of the students will do mistake. When it comes to nucleus, what will be the diameter?

[00:24:35]When it comes to nucleus diameter, what is the diameter of the nucleus? 10 ^ -12 to 10 ^ -3 cm. In the same way when it comes to atom what will be the diameter of the atom it will be 10 ^ -8 cm. So remember I'm not telling the radius I'm just telling the diameter. It is clear. So these are all the very basic thing we need to remember. Now the next thing other than that other than these concepts from where we can expect remaining question mass of proton mass of neutron and then mass of electron in the same way rutherford model of an atom then followed by that nucleus of atom diameters then this This and it is attached to it is clear.

[00:25:43]Yes. Next. Next. From where we can expect question? Electromagnetic spectrum. Next actually we can expect question from electromagnetic spectrum.

[00:26:01]Electromagnetic spectrum. What is the formula for when it comes to electromagnetic spectrum? What are the things we can write? C is equal to mu lambda.

[00:26:12]First two fora is p = mu lambda.

[00:26:16]Otherwise we can also write it as mu is equal to c by lambda.

[00:26:25]Yes. C is equal to mu lambda. So mu is equal to c by lambda. Or else lambda is equal to what we can able to write c by mu anything we can rearrange and write.

[00:26:40]Now remember one thing what is wave number if suppose I'm rearranging this for lambda. lambda is equal to c by mu.

[00:26:49]Now wave number it is nothing but reciprocal of wavelength. So wave number is nothing but mu by c. mu by c is nothing but wave number. Next time period and then frequency. What is the relation when it comes to time period?

[00:27:04]It is reciprocal of frequency. Time period is reciprocal of frequency. Next, we know one famous formula E. What is the E? Energy. E is equal to H C by lambda. What will be the H value?

[00:27:22]6.626 into 10 ^ - 34 JW. H is equal to 6.626 626 into 10 ^ - 34 JW second. If the energy I want in electron volt if the energy value I need in electron volt then automatically lambda we will be taking in amstrong unit. So in the numerator is fixed 12,400 divided by wavelength in amstrong unit.

[00:27:51]So with the help of this formula I can able to calculate energy in electron volt then I can convert it into jewles per second.

[00:28:00]It is clear. So these are all the very important formulas. Now sometimes the question paper set will ask total amount of energy transmitted. How we can able to write E is equal to NH mu or else HC by lambda. These are all the things we need to remember when it comes to electromagnetic spectrum.

[00:28:26]These are the formulas we need to remember when it comes to electromagnetic spectrum.

[00:28:37]It is clear right? Apart from this nothing is there in atomic structure.

[00:28:41]Now immediately I will just go and solve questions for you guys. Followed by this. The next one bore model of an atom. We know very well when it comes to as I told this is very important my dear students in exam point of view when it comes to bor's atomic model what is the formula we can tell first thing what we know MVR is equal to n hx 2 pi or mvr is equal to n h cross h cross is nothing but hx 2 pi what is the radius formula 0.529 into N² upon Z Armstrong. What is the velocity formula? 2.188 into 10 ^ 6 Z by N m/s. Then when it comes to energy, if I talk about energy, what energy? I'm talking total energy that is -3.6 into Z² upon N² EV per atom. If I want to talk about total energy, potential energy, kinetic energy. Remember one thing my dear students potential energy is equal to -2 * of kinetic energy. Then what is the relationship between kinetic energy and total energies? Kinetic energy is nothing but minus of total energy. So automatically potential energy total energy is nothing but potential energy is equal to 2 * of total energy.

[00:30:11]2 *s of total energy. This is very very important. Next actually what we will discuss revolutions based on this also sometimes we'll ask question revolution per second per second is given by mu upon 2 pi r revolution per second is given by mu upon 2 pi r. If suppose time taken for complete revolution reciprocal of this time taken for time taken for complete revolution that will be 2 pi r upon mu. Time taken for complete revolution is 2 pi r upon mu.

[00:30:55]Now energy difference between two energy levels. How we can able to tell energy difference between two energy level?

[00:31:03]Very simple. Remember one thing this is very very important.

[00:31:27]Energy difference between two energy level. When it comes to energy difference between two energy level that is delta E higher energy level minus lower energy level. So automatically now what is the formula I can use? 13.6 into Z² 13.6 6 into z² upon 1x n1² - 1 by n_sub_2². So we can use this formula to calculate differencing energy. What will be the units? We will be getting the units in e by atom. We will get the units in e by atom. If I want to use ionization energy then change in difference change in energy will be equal to ionization energy into 1x n1 square - 1x n_sub_2 squared 1x n1² - 1x n_sub_2 squared. Now I is nothing but it is called as ionization energy.

[00:32:31]How to find out ionization energy? Very simple. Remember one thing, ionization energy is the energy difference between from energy infinite level minus energy of ground state. Energy at infinite is zero. 0 minus energy of ground state. 0 minus energy of ground state. So what is Egs? Energy of electron in ground state.

[00:33:04]Energy of electron in ground state. What is I?

[00:33:12]I E is nothing but ionization energy. I is nothing but ionization energy. So these are all the list of formulas first you guys need to remember when it comes to atomic structure. Mass of proton, neutron, electron, rutherford model of an atom, radius of nucleus calculation. What is nucleus diameter, atom diameter, anode ray and then when it comes to electromagnetic radiation, what are the different formulas followed by that bore atomic model. So this is very very important definitely you guys will get question apart from that energy difference between two energy level. It is clear. So these are all the important formulas we need to remember. The next thing short question from where exactly we can expect the question? we can expect from hydrogen spectrum.

[00:34:04]The next thing from where we can expect question is hydrogen spectrum.

[00:34:13]When it comes to hydrogen spectrum, what is the formula? We know hydrogen spectrum wave number that is nothing but reciprocal of wavelength r into z² upon 1x n1² - 1x n_sub_2². So we can use this formula to calculate wave number hydrogen spectrum.

[00:34:35]What is R value here? R value is nothing but 1097 109700 cm inverse. This R is exactly called as redberg constant.

[00:34:54]This R R is exactly called as what? R is called as redberg constant. Now one more thing remember one thing first line of a series that means how to find out for a first line of series N_sub_2 value will be equal to N1 + 1 limiting spectral line that means series limit very simple let me write all those things then you guys will understand limiting spectral line in question paper the question paper setter will use the limiting spectral line or else series limit they will mention.

[00:35:34]Calculate the series limit that means N_sub_2 value is nothing but infinity.

[00:35:41]In the same way first line of series first line of series how to calculate that is n_sub_2 will be equal to n1 + 1. If I add + one to the ground state then actually it is called as first line of the series. What is then H alpha line? H alpha line will be this will be the H alpha line. So this is nothing but we will be calling it as H alpha line first line. H beta line means second line. H gamma line means third line. H delta line means fourth line. So this is exactly first line.

[00:36:27]Now remember one thing longest wavelength means shortest frequency least energy. So when it comes to hydrogen spectrum remember longest wavelength means so frequency will be shortest frequency least energy.

[00:36:54]Yes. So this is very very important.

[00:36:58]Then now the next thing number of spectral line that is very important. Right? Now the next thing number of spectral line please do make a note of it. Then we will calculate number of spectral line.

[00:37:22]Fine. Okay. Now when it comes to number of spectral line the calculation is very very important.

[00:37:34]When it comes to number of spectral line how to do this calculation very simple.

[00:37:38]If the electrons jumps from If electron jumps from from higher energy level electrons jumps from higher energy level to ground state then what is the formula we can use? N into n minus1 upon 2. If suppose electrons jump from Higher energy level two other than ground state some other lower energy level two lower energy level then what is the formula we will be using remember n_sub_2 - n_sub_1 into n_sub_2 - n1 + 1 / 2 Now remember one This n represents what? Higher energy level. Here higher energy level is represented by N2. Lower energy level is represented by gen1. So these formulas are very very important in exam point of view when it comes to calculations of number of spectral line.

[00:39:01]So these two formulas are very very important. We can expect question from this.

[00:39:07]It is clear.

[00:39:17]Anybody's having any doubts here.

[00:39:21]Next when it comes to drogley hypothesis that is very very important. From Drogley what is the formula? We know lambda is equal to h by mv or we can call it as h by p. If suppose circumference of nth orbit this is very very important my dear students 2 pi rn is equal to n lambda this is very very important when I can use this formula circumerence of nth orbit circumerence of nth orbit is equal to what n * of wavelength of electron orbit is equal to n * of n * of wavelength of electron.

[00:40:20]This is very very important expression.

[00:40:22]Remember one thing number of waves how to calculate number of waves means number of waves is nothing but n. What is this n? It is nothing but principal quantum number. Number of waves is equal to n. n is nothing but principal quantum number. In the same way wavelength of electron, one more formula is there. If you are dealing with volt, what is the formula? Lambda is equal to roo<unk> of 150 upon v. Root of 150 upon v. What will be the units we will be having here? The units will be amstrong units. Here the units will be among units. Apart from this one more formula lambda is equal to h by 2 m kinetic energy. This is also one of the important formula we can use when it comes to drogley hypothesis.

[00:41:18]It is clear. So this is all about D brogley hypothesis.

[00:41:38]Next I will write the famous formula.

[00:41:41]You guys know very well what is that formula is all about. Aenberg uncertainty principle.

[00:41:53]Heisenberg uncertainty principle. So what is the formula for Heisenberg uncertainty principle?

[00:42:00]Delta x into delta p greater than or equal to hx 4 pi or else the same thing I can write delta x into delta v greater than equal to hx 4 pm m direct question you people will get my dear students we we will get direct question right we will get direct question right other than this the main thing is quantum number we know very well in quantum number where students are having confusion those things only I will give quantum number because even I am not expecting but these are all the places students are getting confusion when it comes to quantum number that now whatever I'm going to tell please do make a note total number of electron in an orbit total number of electron in an orbit in orbit. Next one.

[00:43:04]Total number of orbitals in an orbit.

[00:43:12]Total number of electrons in an orbit.

[00:43:15]Total number of orbitals in an orbit.

[00:43:18]Total number of subshell in an orbit.

[00:43:24]Definitely question paper set will focus on this question. Total number of subshell in an orbit. What is the formula? Anybody can tell me.

[00:43:38]Yes.

[00:43:42]Anybody can tell me what is the formula when it comes to these three.

[00:44:07]Yes.

[00:44:20]What will be the for total number of electrons in an orbit? Total number of orbitals in an orbit. Total number of subshell in an orbit.

[00:44:30]Very very important. What is the formula? Total number of electron means 2 n². Total number of orbitals means n².

[00:44:38]Total number of subshell means n. So please do remember this formula. What is n represents? N represents principal quantum number. If suppose angular momentum they are asking angular momentum then what is the value? NH by 2 pi. If angular momentum they are asking then what is the formula? NH by 2 pi. If suppose instead of principal quantum number aimutal quantum number is given.

[00:45:14]Now tell me the formula to calculate total number of electrons in a suborbit.

[00:45:34]Total number of electrons in a suborbit.

[00:45:37]Understand the difference. In the same way, total number of orbitals in a suborbit.

[00:45:45]Total number of orbitals.

[00:45:49]In a suborbit. Tell me what will be the formula?

[00:45:55]Yes.

[00:45:57]Here what will be the formula?

[00:46:00]Quick.

[00:46:02]Yes. Yes. Yes.

[00:46:04]Tell me my dear students what will be the formula here. In the meantime let me drink water.

[00:46:12]Yes.

[00:46:24]So very simple thing total number of electrons in an suborbit means 2 into 2 L + 1. Total number of orbits orital in a suborbit means 2 L + 1.

[00:46:41]Here 2 into 2 L + 1 total number of orbitals in a suborbit means 2 L + 1. It is clear. So these are all the things very very important. If suppose angular momentum is equal to NH by 2 pi. Now instead of this principle quantum number if aimutal quantum number is given that is L is given. How to find out orital angular momentum?

[00:47:05]If instead of principal quantum number aimutal quantum number is given. How to find out orital angular momentum?

[00:47:16]What we know orital angular momentum? roo<unk> of L into L + 1 H cross. So remember my dear students this is just an angular momentum. This represents orital angular momentum. This formula represents orbital angular momentum.

[00:47:37]What is H cross? H cross is nothing but H upon 2 pi. It is clear. So these are all the things you guys need to remember. No one is going to ask you guys explain quantum number all those things directly remember these things just get the values that's all it is clear then that's all my dear students this is all about atomic structure now if you people remember these things know it will be very easy for us remember one thing node anti-node calculation what is the formula to calculate node Yes, node calculation anywhere space is there? Yeah, here space is there. Let me write node formulas also.

[00:48:25]Let this be like a formula book.

[00:48:28]What is total node?

[00:48:32]N minus one.

[00:48:35]What is radial node?

[00:48:40]N - LUS1.

[00:48:43]What is angular node? Angular node will be equal to L azimutal quantum number.

[00:48:49]What is nodal plane? Nodal plane will be equal to aimutal quantum number. These three things are very very important. Four things.

[00:49:01]These things are very very important. So total node is nothing but n minus one.

[00:49:06]Total node is nothing but n minus one.

[00:49:09]Radial node is nothing but nus lus one.

[00:49:12]Nodal plane is L. Angular node is L. It is clear. Right? So let me give just 30 seconds of time. Take a screenshot also.

[00:49:23]When it comes to first chapter atomic structure, you guys need to remember only these things that is more than sufficient.

[00:49:32]That's all to score marks direct numericals will come. So remember now onwards when it comes to atomic structure mass of proton mass of electron mass of neutron how to calculate radius of nucleus with the help of rutherford model of an atom in anode ray only one thing E by M ratio is independent electromagnetic radiation how energy wavelength velocity everything is related apart from that B's atomic model radius velocity energy potential energy kinetic energy total energy relation node calculation energy difference between two energy levels.

[00:50:08]How to calculate? Apart from that hydrogen spectrum, this is very very important. Followed by that number of spectral line. If electrons from higher energy level to ground state, then we need to use this formula. If electron comes from higher energy level to lower energy level, then we need to use this formula. Remember one thing, N2 represents higher energy level, N1 represents lower energy level. In the same way, from higher energy level to ground state that is higher energy level is N that is N into N minus 1 by 2. D Brogley wavelength is very simple.

[00:50:37]Lambda is equal to H by MV. So these are all the different relation. Don't forget this formula. This is very very important.

[00:50:46]This is very very important. 2 pi r is equal to n lambda. Apart from that hazenber uncertainty principle. So this is the formula we need to use followed by quantum numbers. It is clear atomic structure is done and tested.

[00:51:06]Clear. So please do take a screenshot.

[00:51:09]Pick only three pages. First one, second one. I'm not hiding the board, I believe. Yes. So this is the first one.

[00:51:18]This is the second formula. This will be the third one. Now shall we move into the next chapter? That's all. First we will revise all the chapter as fast as possible.

[00:51:30]How can I develop English like you, sir?

[00:51:34]Start talking my dear student has start start to speak actually automatically you will you can able to do it then understand crystal clear sir okay fine perfect now because the duration is very limited for us today I'm not going to take 6 hour class the class is of only two to two and a half hours duration so already since 1 hour completed today we will try to give all the formulas we will discuss all the chapters like this after that what we can able to do with the help of this you guys itself can able to solve numerical or else in another class I will come with numerical okay so today make a note of all this formulas whatever I'm going to discuss that is more than sufficient perfect now shall we move into the next topic next to atomic structure what is very important basic concepts of chemistry that everyone know I believe right so basic concepts terms of chemistry is a problem. My dear students tell me yes I'm not going to give equilibrium thermodynamics because tabular column is already given in the strategy video equilibrium I completely discussed in first class of 10 marathon the 10 marathon you guys can able to see in live section of the same channel tabler column this video you guys can able to see in the video section of this particular channel balancing trick also I did in 10 and a half hour lecture now directly after discussing atomic structure now I'm going to discuss is chemical kinetics electrochemistry solution because 12th class portion is very important why from 12th class we will get 55% of the syllabus 11th classes of only 45%age so here also in this 15 question if I split accordingly 7 to 8 question we will get here 7 to I will watch the video after class sir okay Ana yes so 7 to 8 question will come from class Well, so the next I'm going to continue with chemical kinetics. Very very important chapter my dear students. Chemical kinetics. So shall we start?

[00:53:48]Yes.

[00:53:52]Chemical chinetics electrochemistry is very very important.

[00:53:58]Yes. Direct formulas we need to remember. That's all when it comes to chemical kinetics.

[00:54:04]Okay sir, let's start 12th.

[00:54:06]Yeah.

[00:54:08]So the next chapter what we are going to discuss is chemical kindics chemical kinetics directly as I told what is very important halflife integrated rate expression so remember only those things when it comes comes to chemical chinetics. Remember the first thing if I am having one general expression n a plus mb gives pc plus qd how it is possible for us to write the rate of disappearance and appearance very simple first let me write in a short form I will write because each and every student okay that's fine rate of disappearance How I can able to write minus da by dt?

[00:55:15]In the same way I can able to write minus db by dt.

[00:55:25]Rate of appearance, rate of disappearance talks about reactant. Rate of appearance talks about product.

[00:55:32]Because we know very well once the reaction starts to happen, what will happen? Concentration of the reactant decreases. concentration of product increases. So rate of appearance when it comes to rate of appearance plus minus sign represent it is decreasing.

[00:55:47]Positive sign represent concentration is increasing. So plus dc upon dt is equal to plus dd upon dt. Now one more thing remember carefully. This is rate of appearance. This is rate of disappearance. Now for the same reaction for the same balanced chemical equation if I want to write average rate of reaction otherwise rate of reaction how we can able to write rate of reaction. If I want to write the rate, how I can able to write the rate expression minus da by dt is equal to minus db by dt is equal to plus d c by dt. Then finally what we will be having is equal to plus dd by dt. Am I right? Now if you listen carefully my dear students now what will be the next thing we will be exactly having.

[00:57:01]Now understand when it comes to rate of appearance we are not even bothering about stochometric coefficient. Am I right or not?

[00:57:08]>> We are not even bothering about stochometric coefficient. But remember one thing when we are about to write average rate what we need to do when it comes to average rate we need to consider the stochometric coefficient.

[00:57:23]So automatically here what is the stochometric coefficient? Yum PQ. So we need to write stochometric coefficient will come in the denominator. Yum PQ. It is clear. So remember one thing my dear students when it comes to rate when it comes to rate whenever the question papers address asking us to write the rate we need to remember one thing stochometric coefficient will come in the denominator it is fine so the very basic thing first you guys need to remember this clear please do make a note so in general how I can able to write rate.

[00:58:08]Rate is nothing but rate of appearance or disappearance upon stockometry coefficient. So how I can write in general representation? I can represent it as rate is equal to rate of appearance upon rate of disappearance divided by stochometric coefficient. Now appearance disappearance means we will be having plus and minus sign. So mention here plus or minus rate will be equal to plus or minus rate of appearance or disappearance upon stochometric coefficient. It is clear.

[00:58:48]Anybody's having any doubts now?

[00:58:54]Clear? Anybody's having any doubts?

[00:58:59]No doubts. Right. Yes. Perfect.

[00:59:02]Now apart from this in this particular chapter in the last moment what are the things we need to know as I told always half-life integrated rate constant expression both are very very important.

[00:59:15]Now before that what will be the order generally let me write rate law in a single page I will try to complete this chapter because it will be very helpful for us for the last minute revision also before the day of exam early morning. Rate law what we know rate is directly proportional to concentration of reactant raised to the power X.

[00:59:45]This X is exactly called as order. X is nothing but it is called as order. To remove the proportionality sign I will introduce one constant. So rate is equal to k into reactant to the power x. Now if I talk about order, order is basically a experimental quantity.

[01:00:14]Order is basically a experimental quantity. Now remember one more thing sir you teach very fast.

[01:00:26]What your concern? I am am I teaching very fast or you want me to increase my speed further treat? Now order is the experimental quantity. Remember one thing this order will be equal to stochometric coefficient.

[01:00:43]This order will be equal to stochometric coefficient. When this order can be equal to stochometric coefficient for elementary reaction for elementary reaction that is elementary what is the other name we can tell singlestep reaction we know very well some reaction in chemistry will takes place in single step those reactions are called as elementary reaction for those particular reaction order will be equal to stochometric coefficient order will be equal to stochio geometric coefficient.

[01:01:21]Now one more thing this K this is called as rate constant.

[01:01:31]How to calculate the unit of rate constant? Remember one direct formula?

[01:01:38]Unit of rate constant is given by the formula mole liter time inverse mole to the power what to mention now that will be the question right so remember this thing directly mole to the power 1 - n to the power 1 - litter to the Pa for example if it is zero order reaction okay Shiva Praash good morning sir because of test I couldn't able to attend the live session I am watching the recorded video thank you for teaching salt analysis okay okay Shiva Praash yes I think that is more than sufficient actually I need to discuss confirmatory test for uh uh confirmatory test for basic radical is pending. So that also I will give like a flowchart before exam. Don't worry tomorrow or day after tomorrow I will post that as a strategy video.

[01:02:47]Confirmary test for basic radical. Yes, this speed is perfect sir. Okay, exam is approaching noma. That's why I'm going little bit faster. Okay, because now we are not starting our preparation to teach very slowly. Now it is like a revision unit of rate constant remember the direct formula mole to the power 1 minus n now liter to the power what exactly we will be getting yes mole per liter otherwise I will write like this in a general way concentration mole lit minus1 to the power n minus one like this also we can write super translation said Robin is very busy in chatting with his friends.

[01:03:42]So n what does this n represents? N represents order. So first order reaction means substitute one in place of n. Second order reaction means substitute two in place of n. Third order reaction means substitute three in place of n. That's all. So what we need to do is we just need to remember this general formula. This is exactly unit of rate constant. Now for zeroorder reaction what is the expression?

[01:04:08]Yes for zeroorder reaction what will be the expression we will be having integrated rate expression.

[01:04:17]Zero order reaction first order reaction.

[01:04:23]Remember when it comes to zeroorder reaction t of is equal to a upon 2k. For first order reaction t of is equal to 0.693 by k t of is equal to a not upon sorry sir no need of sorry Robin t is equal to a upon 2k tf is equal to 0.693 upon k I can understand your mindset Robin see he told sorry and then he deleted his comment [snorts] okay fine so t is equal to a not upon 2k t is equal to 0.69 693 upon K. K represents rate constant. Now when it comes to integrated rate expression how we know remember directly last minute no need of lawn all those things because we can able to solve questions when it comes to logarithm only better keep the logarithm formula directly K is equal to 2.303 303 upon t log of a min - x final concentration upon initial concentration log of a - x upon yes one second a by a - x very sorry log of a by a minus x a represents initial concentration a minus x is concentration after particular MT next thing when it comes to zero order reaction immediately we can able to do if I'm writing rate minus DA by A is equal to K we will be having right because zero order reaction for example let me write like this imagine one reaction R is equal to K into A power 0 anything 0 is 1 now minus DA by DT is equal to K automatically what we will be having minus DA is equal to K DT upper limit minus lower limit. So what exactly I will be having here I will be having KT is equal to here upper limit minus lower limit. What will be the upper limit?

[01:06:36]Final concentration minus lower limit. So what will be the expression? KT is equal to A minus A T.

[01:06:46]Instead of doing this derivation directly remember a t is equal to sorry kt is equal to a minus a t k is equal to a - a upon t like this also we can remember just remember the direct formula praep hi praep y 1 2 dot now hi so k is equal to a minus a t upon t It is clear.

[01:07:19]So these are all the expressions we need to remember. Very very important. If suppose sir halflife any general expression is there. What question paper setter can ask is when it comes to zero order reaction t half depends on initial concentration. When it comes to first order reaction t independent of initial concentration. That is very very important. When it comes to rate, when if I want to write rate, how I will be writing, rate is equal to K into concentration of reactant raised to the power 0. Zero order reaction for first order reaction rate is equal to K into concentration of reactant raised to the power 1. Now understand these things whatever I'm going to tell now orally that is very very important in exam point of view.

[01:08:10]When it comes to zeroorder reaction, half-life depends on initial concentration. When it comes to first order reaction, half-life independent of initial concentration. When it comes to zeroorder reaction, rate is independent of initial concentration. When it comes to first order reaction, rate depends on initial concentration. These four statements are very very important in exam point of view. It is clear. Once again I'm repeating when it comes to zero order reaction half-life depends on initial concentration rate independent of initial concentration. If I talk about first order reaction half life independent of initial concentration but rate depends on initial concentration.

[01:08:50]That's all. So these are all the things very very important. Now what type of question the question paper setter can frame means he or she may ask halfife and then initial concentration how they are related. So every time it is not possible for us to remember the things right. So for that purpose one general formula he will give t is inversely proportional to a kn to the path. Now when it comes to zero order reaction it is directly proportional. So what is the formula I will be writing n minus one.

[01:09:25]You guys can use this general formula.

[01:09:29]What is n? If it is zero order reaction substitute zero first order reaction you guys can substitute one there. It is clear right?

[01:09:39]So we can n represents order any criteria is there sir it is possible for me to use this particular expression up to certain number. Yes we are having the things for n greater than or equal to 2. We can use this for n greater than or equal to 2.

[01:10:02]It is clear then. So these are all the things you guys need to remember when it comes to chemical kinetics. The last equation you guys know very well. What is that? Arinius equation.

[01:10:18]Yes.

[01:10:22]The last thing is arinius equation.

[01:10:28]Arshan sir I could not understand this topic. Why ma which class actually you are doing now? Are you a dropper or you are in which class? I am late today. No problem. From the beginning you see automatically you can able to understand.

[01:11:00]>> [snorts] >> Yes. So directly remember arinius equation formula. What is the formula for arinius equation?

[01:11:16]Let me write in the new page. Arinius equation.

[01:11:23]K is equal to A into E power minus E A by RT. So the expression is actually arinous equation. Now one more thing now 12th class. Okay. Okay.

[01:11:39]Now only 12th class means actually 11th to 12th going student, right?

[01:11:51]So time is there don't worry in school college also they will teach no chemical chinetics by it is in 12th class. So K is equal to a into e power minus ea by rt otherwise what is the expression we can write log k2 by k1 is equal to ea upon 2303r a upon 2.303 303 are TS2 minus T_sub_1 upon T_sub_1 into TS2 we can able to write like this or else 1x t1 minus 1x ts2 otherwise remember like this 1x t1 minus 1x ts2 it is clear so with the help of this expression we can able to do it now one more thing I just want to tell in radioactive decay maximum question paper set won't focus on is but state in a radioactive decay what we know NT is equal to N E power minus lambda T this is very very important now amount of just have an idea for that purpose I'm writing amount of radioactive substance after the amount of radioactive substance after n halflife periods.

[01:13:23]How to calculate? Very simple. NT is equal to 1 by 2 ^ n.

[01:13:31]So this is very very important expression. It is clear.

[01:13:36]Then the last thing is temperature coefficient. How to calculate temperature coefficient?

[01:13:50]Temperature coefficient K T + 10 upon KT value will be equal to 2 to 3. If temperature coefficient is not given generally we will assume it as 2. Okay then we will be assuming it as 2 only. So these are all the things about chemical kinetics. It is clear.

[01:14:14]Yes, it is clear.

[01:14:20]So this is all about chemical kinetics.

[01:14:23]Why I'm doing this means see if you are in any of my other batch, I am the one teaching from the beginning of the year.

[01:14:32]So all my students already know all these things, right? All my students already know all these things because they are having each and everything because my class notes that is more than sufficient but here in this channel since I'm taking very recently now when it comes to physical chemistry at least in today class due to time constraint I want to give all the formula sheet so that next class what I will do directly I will solve questions I can tell to the students also just go and refer this particular video that's all that is the reason even these formula sheets will be really helpful for you guys.

[01:15:07]Clear? Chemical chinetics. So atomic structure is done. Chemical chinetics remember rate of disappearance.

[01:15:13]Appearance rate and then rate law unit of rate constant zero order reaction.

[01:15:16]First order reaction is very important.

[01:15:18]Based on this direct question we will get my dear students. Direct question just a direct question. Then arenous equation. Now shall we move into solution chapter?

[01:15:28]Shall we move into solution chapter? Is everyone is ready?

[01:15:33]Yes.

[01:15:44]Yes.

[01:15:46]Now the next one is solution chapter.

[01:15:53]Next thing solution chapter.

[01:15:58]solutions.

[01:16:04][snorts] When it comes to solution chapter, what are the things we can tell?

[01:16:12]First concentration term. Definitely we will get the question. But anyhow, majority of the students know about this concentration term in our 11th class only right or not. But still some of the important concentration term I will give make a note.

[01:16:30]Concentration terms.

[01:16:34]First what we need to know marity number of moles of solute weight of solvent in kg or else number of moles of solute weight of solvent in gram into 1,000. marity marity is equal to 10 into weight by weight percentage into density of the solution divided by molar mass of solute or else marity is the equal to 10 10 into weight by volume percentage divided by marity of the solute these are all marity formula now when it comes to marity marity is number of moles of solute divided by marity no [laughter] marity What will come in the denominator? Number of moles of solute divided by volume of solution in liter.

[01:17:23]Volume of solution in ml. Fine. Now mality. Marity is number of moles of solute weight of solvent in kg. Number of moles of solute weight of solvent in gram into 1,000. Then next step mity marity and marity relation 1,000 into marity divided by 1,000 into density of the solution minus marity into molar mass of solvent. This is very very important. So apart from that mity is equal to 1,000 into mole fraction of solute into 1 minus mole fraction of solute into molar mass of solvent. Here solute my dear students.

[01:18:05]Yes. Here molar mass of solute. Here molar mass of solvent. Now what is the relationship between mality and marity?

[01:18:14]That is what this relation.

[01:18:20]Oh my god. What happened? What happened?

[01:18:23]Baba.

[01:18:28]Yes.

[01:18:30]So these are all the very important concentration term. So this is all about marity.

[01:18:37]This is all about mality. Then when it comes to normality, what is normality?

[01:18:45]Number of gram equivalence. Number of gram equivalent upon volume of solution in liter. Now what is number of gram equivalent? Number of gram equivalent is nothing but yes anybody given weight upon equivalent weight. What is equivalent weight? Equivalent weight is nothing but molecular weight upon n factor. What is n factor? N factor is also called as valency factor or we will be calling it as number of electron transfer. we will be calling it as number of electron transfer. So in redux reaction we would have done this. Now in the place of equivalent weight can I substitute this?

[01:19:34]So automatically number of g equalence will be equal to given weight upon molecular weight divided by n factor. So that will goes to the numerator into n factor. Now given weight upon molecular weight it is nothing but number of moles. So number of gram equivalence is also called as number of moles into n factor. Now what is the relationship between marity and normality? It is very simple.

[01:20:06]Marity will be into n factor is nothing but it is called as normality. So this relation is very very important. We may get some basic question.

[01:20:34]Okay.

[01:20:36]Uh Arson, you can do one thing now. You are in 12th class. So simultaneously you want to prepare for competition exams also means you can enroll in our Laksh 2027 batch right. So 2 days back class has been started and then it is going on. Even now I am talking right in this video if you look into the description of this video. No you can able to see that batch Lakshmi 2027 batch you can enroll there. So automatically there you can prepare for your 12th boards as well as parallelly for neat examination also.

[01:21:10]No sir, if I want to enroll, I want to prepare for J means a lux J 2027 batches there you can parallelly prepare for your board exam as well as J examination.

[01:21:21]So both in both the batches neat as well as J questions will be the concepts will be completely taught followed by questions of higher level. Even I'm only teaching for neat chemistry. So I will start from the scratch slowly I will build up the concept. I will stop in the advanced level. That's what is happening. You can enroll in those batch.

[01:21:43]Okay. See that is what Yeah. Baba any student okay hanged himself at last night. So one thing my dear students please see exams will come and go. Exams is not the end for life. It is just we need to try.

[01:22:03]Yeah. Those batch will not come in the YouTube ar those batch you can able to access only by enrolling in the particular batch through our application. Okay. So please make use of it.

[01:22:18]Hey sha don't worry all my students will really do well in the May third examination. Question paper will be of easy. Don't worry. See chemistry there is no option to take tough question.

[01:22:31]Chemistry will be always easy. Please don't worry you guys will really do well. Okay. Yes. Right. So what is the relationship between marity and normality? Normality is nothing but marity into n factor. Marity into n factor is nothing but normality. Next.

[01:22:48]Apart from this anything is required in solution chapter. Yes. The question paper setter may focus on formality also. The question paper setter may focus on formality. Formality is very very important.

[01:23:02]Then what is formality?

[01:23:07]It is not that formality sir for formality purpose I'm listening to your class. No it is not that formality. Now when it comes to one formal solution we will be using formality is what means number of gram formula mass number of number of gram formula mass of solute upon volume of solution in liter number of gram formula mass of solute divided by volume of solution in liter it is clear now apart from this what are the very important thing you guys need to know when it comes to this particular chapter is Henry's law now I'm getting into solution chapter listen carefully Henry's law's law is nothing but partial pressure of the gas is equal to kh into mole fraction of the Yes.

[01:24:13]Partial pressure of the gas is equal to now Robin Robin.

[01:24:26]Okay. Fine. So partial pressure of gas is equal to Henry's constant into mole fraction of the gas. So this is very very important. Now one more thing R's law's law remember when it comes to solubility remember if KH value is more solubility of gas will be less the relationship between KH and solubility of the gas when it comes to R's law what we Partial pressure of a particular component is equal to P A K A PB is equal to P B KB. So total pressure PT is equal to P A K A + P B K B otherwise I can write it as PT is equal to P A + PB.

[01:25:27]Now when it comes to delton's law when it comes to delton's law relate this expression pa is equal to pa here also pa is equal to pt into ya pb is equal to pt into yb. So automatically what we can able to write if I want to write total pressure otherwise pressure of the solution let me keep like this instead of writing PT I can write it as PS. So here also I can write it as PS after adding solute PS. So here also what PS will be equal to PT YA plus PT YB. So now if you listen carefully this expression and then this expression we can able to equate right so we can able to equate automatically we will be getting all the different formula for example based on this they may ask question if I equate these two formulas what Dton's law and roll's law what I will be getting P a k a is equal to pt y a p b k b is equal to pt y b so the question paper set may ask us to calculate anything so if the question papers set asking me to calculate anything I can rearrange this expression these two expression gives the relation between dton's law and then roll's law dton's law talks about in vapor phase r's law is for in solution phase it is for vapor pressure that is in solution.

[01:27:19]This is for vapor phase.

[01:27:25]Okay. Fine.

[01:27:27]Clear. R's law. Henry's law. Now remember one thing.

[01:27:32]R's law is for what exactly? R's law is for liquid in liquid solution.

[01:27:41]Hendry's law is for gas in liquid.

[01:27:47]If I talk about collleative property that is solid in liquid. Please do remember this also. The question paper setter may focus. It is clear.

[01:27:56]Then now the next thing is collleative property.

[01:28:01]As I told just now if I'm trying to dissolve collidine liquid then it is collative property.

[01:28:11]then it is exactly called as collleative property.

[01:28:18]What are the formulas we will be having in collleative property? The first thing is relative lowering of vapor pressure or LLVP. I can write the formula as relative lowering of vapor pressure P A minus PS upon P A is equal to IB or else I can write it as instead of writing KB now this is solution I into KB in the same way elevation of boiling point. So what is the expression? Delta TB is equal to KB into I into M. M represents mality. I represents van factor.

[01:29:07]In the same way depression in freezing point, elevation of boiling point, depression in freezing point. Delta TF is equal to KF into I into M. Then next thing we can talk about osmotic pressure.

[01:29:25]Direct question you people will get my dear students in neat examination we are not preparing for J. So osmotic pressure is nothing but pi is equal to I into C into R into T. R is nothing but gas constant. Remember one thing now how to calculate KF and then KB value that is also very very important. If I want to find out KB, how to find out R TB² upon,000 into boiling. That means we need to consider enthalpy of vaporization. We need to calculate enthalpy of vaporization otherwise latent heat of vaporization.

[01:30:04]Latin heat of vaporization KF depressioning freezing point. So automatically what I will be considering here fusion that is R TF² upon,000 into Latin heat of fusion. It is clear we can use all this formulas.

[01:30:23]What is KB KC? Now the next question will come.

[01:30:28]KB is called as molal elevation constant or we will be calling it as molal depression constant. What is KF? We can able to call KF as hey once again once again mol elevation constant orioscopic constantoscopic constant here KF depression in freezing point. So molal depression constant or we will be calling it as cryoscopic constant. We will be calling it as cryoscopic constant.

[01:31:45]So these are all the formulas very very important. Now when it comes to osmotic pressure when it comes to osmotic pressure remember if two solutions are having same osmotic pressure then it is called as isotonic solution. If one solution is having higher osmotic pressure than another one, the higher one is called as hypertonic, the lower one is called as hypotonic solution. The higher one is called as hypertonic. The lower one is called as hypotonic solution. It is clear anybody is having any doubts. Now what is this I represents? Very simple that is vanto factor.

[01:32:36]I in all the formulas I included I you guys can able to see. So I represents van factor. We need to include this in case of solute particles getting associated I is equal to n + associated then I need to use the formula I is equal to 1 + 1 by n -1 alpha. If the solute particle is getting dissociated then I is equal to 1 + n -1 alpha. What alpha represents degree of dissociation? N is number of moles of products obtained per mole of reactant.

[01:33:32]number of moles of products obtained per mole of reactant. So whenever we are calculating number of moles of product obtained suppose if the question paper set is giving 2 A gives 3 B + 1 C. So we should not write N value is four. That is wrong. Pour I am getting for two moles. So for one mole how much I will be getting two. So N value should be two. Like this we need to calculate it is clear. So these are all the things very very important. What are the other formulas to calculate I?

[01:34:05]Any idea? So other formulas to calculate I that is nothing but observed collleative property divided by normal collleative property.

[01:34:16]Observed collleative property upon normal collleative property.

[01:34:22]Observed upon normal. Some more formulas we can use. What are the thing?

[01:34:27]Theoretical or formula molar mass of solute divided by actual obser observed abnormal molar mass of solute theoretical or formula. So theoretical or formula molar mass of solute upon actual observed abnormal molar mass of solute. So these are all the formulas we need to remember. It is clear.

[01:35:21]Yes. So this is all about solution chapter. Anybody is having any doubts in the solution chapter.

[01:35:29]Quick in solution chapter. So only these formulas we need to remember.

[01:35:35]Concentration term and then Henry's law, R's law, Dton's law, collleative property all the formulas. Vant factor when association what will happen?

[01:35:44]dissociation what will happen how to calculate here if you know all these things solution is fine it is clear complete formula sheet I'm giving my dear students that's all clear then anybody is having any doubts.

[01:36:23]So if you listen carefully once again I just want to when it comes to physical chemistry organic already done and dusted in last two marathon when it comes to physical chemistry before getting into question in this last week time 7 to 8 days only we are having eight chapters in physical chemistry. So definitely we will be getting minimum one to two question from each chapter. So focus only on the subtopics. Whatever I told if few people solve questions from these subtopics only we can easily able to score 11 questions. We can easily able to write 11 questions correctly. So 44 to 45 marks. So for this what is required formula sheet. Atomic structure I given the formula sheet in today class. You guys can able to see atomic structure complete formula sheet I given. This is more than sufficient. You people will get direct question. Next basic concept of chemistry in 11th class we already know very well. So there is no need of formula sheet otherwise I will give you time permits. Equilibrium in 10 hours marathon in the same channel if you go to live section you guys can able to see two marathon of chemistry part one part two. In that part one marathon 10 and a half hours I completely given all the formulas. I discussed everything with respect to equilibrium thermodynamics in the same channel. Go to strategy video you guys can able to see the tabler column or else once again the same part one of 10 marathon if you go if you people see that you people can able to see the tablet column or else strategy video in the same video apart from this after that redux redux trick also I completely given in the 10 marathon session okay part one of 10 marathon you guys can see now when it comes to chemical kinetics in today class I completely given all the formulas In today class I completely given all the formulas when it comes to chemical kindinetics. You guys can see here formula sheet for chemical kinetics. It is given right now. Apart from that which chapter we are having solution. So solution also complete formula sheet I given. It is clear. So that one chapter spending electrochemistry. If I give formula sheet for that chapter also it will be fine.

[01:38:45]Yes. Now I'm just showing the solution page to take screenshot. First take a screenshot of this page then we can start discussing electrochemistry. So after that complete formula sheet you people are having so we can start doing questions.

[01:39:12]Clear.

[01:39:14]Perfect. I hope I'm not hiding the board.

[01:39:19]Next. This page.

[01:39:33]It is clear.

[01:40:13]Okay sir. Okay. Thank you. So the last chapter.

[01:40:17]So with this single thing actually this will be very easy for you guys my dear students to do this.

[01:40:36]Yes the last chapter. So for the remaining chapters please don't forget.

[01:41:00]Yes.

[01:41:02]So now let me start with electrochemistry.

[01:41:07]The last chapter electrochemistry understand one thing when it comes to electrochemistry one of the very easiest chapter but majority of the students will always feel difficult I don't know once again a direct questions will come So please do make a note whatever the formulas I'm going to give. Okay.

[01:41:40]Product of electrolysis everything is important when it comes to electrochemistry.

[01:41:46]Shall we start?

[01:42:02]Yes. Okay. First let me start what is the first thing we know here is electrolytic cell. First thing is electrolytic cell.

[01:42:17]What electrolytic cell will do? Then electrochemical cell we will come. In electrolytic cell what it will do? It will converse. If I talk about electrolytic cell, basically electrolytic cell converts electrical energy into chemical energy.

[01:42:47]Next thing Faraday's law. So the next thing in electrochemical cell whatever the things happening it will follows paradise law of electrolysis.

[01:43:04]Paradise law of electrolysis. In Faraday's law what is the formula? W is equal to Z into I into T. Or else Z is nothing but Z is molar mass upon N factor into 96,500 into I into T. We can rewrite this formula like this. Right? So when it comes to Faraday's second law, what is another formula? We know W1 by E1 will be equal to W2 by E2 will be equal to W2 upon E3. All right. When different electrolytic cell are connected in series.

[01:43:54]When different electrolytic cell are connected in series. So if I talk about this is past law this is second law then next thing when I am doing faraday law of electrolysis in cathode what we will be getting in anode what we will be getting for that I'm just going to give one simple tabler column please do remember that that's all just direct column you know that is product of electrolysis product of electrolysis. Basically what will be the order of discharge potential?

[01:44:57]Greater the discharge potential, it has greater tendency to go and deposit at cathode or at anode. Whether it is gas means it will get evolved solid means it will get deposited. So when it comes to order of discharge potential if I particularly talks about cathode and then anode.

[01:45:19]If I talk about cathode, what will be the order is? A U3+ is greater than Ag+.

[01:45:27]Ag+ will be greater than Pu2+. Then Cu2+ will have greater potential than Zn2+.

[01:45:35]Then water. After water we will be having Al3+.

[01:45:43]Then after Al3+ we will be having Mg2+.

[01:45:48]then Na+ last is lithium. Now when it comes to anode please do remember SO4 2 minus is having very less discharge potential than NO3 minus then H2O then we will be having Cl minus Br minus I minus that how to do this very simple now I will give some general idea if I am having aquas NCL imagine Imagine you are having one container.

[01:46:24]I am having one container. Inside this what are all the ions will be there?

[01:46:28]Since I'm using the word aquis n a l.

[01:46:43]Okay. So not only for AMU whoever the students asking me for the 11th and 12th in organic chemistry do one thing in the same channel PW neat English I was doing the strategy video P block in 8 minutes DB block in 8 minutes thermodynamics in 8 minutes today I'm just going to give FB block in 8 minutes already periodic trend properties in 5 minutes all the videos all inorganic chemistry I'm doing as a five minute series go and watch those video that is more than sufficient you guys can just go and watch when I'm talking only take screenshot also because I will be moving away from the board that is the time I'm giving for you guys to take the screenshot in those strategy video make use of it don't be selfish forward to your friends also that is also important yes so if I'm dealing aquest nacl what are the things will be there in the container na plus ion cl minus ion aquest That means H+ will be there. O minus will be there. Now it is very simple. Look at this order. Anion CL minus O minus.

[01:47:51]Which one will move faster? Cl minus or O minus which one will move faster?

[01:47:58]We know very well. Cl minus actually what it will do? It will move faster than water. So Cl minus will move towards anion will move towards anode because it is positive charge. Now cation Na plus H+ which one will move faster? Water will move faster than Na+.

[01:48:18]So H+ will move towards cathode negative charge. Now what will happen? In cathode reduction will happen. So automatically in cathode hydrogen gas will be produced. In anode chlorine gas will be produced. Everybody getting an idea? So if we remember this order automatically easily we can able to do it is clear right. So this is very very important my dear students.

[01:48:50]Then so automatically you guys can able to do it. But what is the condition?

[01:48:55]Electro should be inerty electrode.

[01:48:58]Electro should not takes part in a chemical reaction. That is electrode should be electrode nature should be inert.

[01:49:09]Electro nature should be inert. That is very very important. It is clear.

[01:49:15]Anybody is having any doubts? Now these are all the things very very important when it comes to electrolytic cell. Now the next thing what we are having electrochemical cell. Now we are having electrochemical cell.

[01:49:42]Electrochemical cell. Remember one thing in electrochemical cell what will happen?

[01:49:48]It converts chemical energy into electrical energy.

[01:49:55]It converts chemical energy into electrical energy.

[01:50:07]So how to calculate E not cell value?

[01:50:09]Remember the formula standard emf of the cell will be equal to E not of cathode minus E not of anode. Standard cell potential means we need to consider only reduction potential. Even in the part one class of marathon 10 hours marathon in live session in the same channel I told one thing to remember easily if reduction potential value is more the particular element has the greater tendency to undergo reduction so it will act as a oxidizing agent or else oxidizing power increases. So how to convert reduction potential oxidation potential very simple magnitude wise SRP value will be equal to magnitude of oxidation potential only sign convention negative SRP means positive SRP if positive SRP means negative SOP why second once again not SRP negative SRP means positive SOP positive SRP why sir this value you are telling Actually the main thing is what we need to understand only one thing. If magnitude wise value is same but we need to consider only reduction potential value. According to UPSC convention if the question paper setter given SOP value whatever the value given keep the same value change the sign that is only reduction potential.

[01:51:35]It is clear.

[01:51:39]Hi Hmon. It is clear. So this is very very important. converts chemical energy into electrical energy.

[01:51:48]Done.

[01:52:00]It is clear. Then instead of standard emf of the cell, if I want to calculate emf of the cell at normal condition, then what is the formula we will use? We will be using nurst equation. We will be using nurse equation. So what is the formula?

[01:52:23]E cell is equal to E not cell minus 0.0591 divided by N into log QC. What is QC? QC will be equal to KC. If it is in equilibrium, QC will be lesser than KC then forward reaction favors.

[01:52:47]If QC value is greater than KC then backward reaction favor. So all these things very very important. Now maximum work done what is the relation we can take?

[01:53:04]We can use this formula minus delta G KN is equal to NF E not of cell otherwise minus delta G is equal to NF when I will be using this I will be using this formula when maximum electrical work done in that case I will be taking standard Gibs free energy change if I want to calculate only electrical work. Then if I want to calculate only electrical work then then I will be using this particular formula. It is clear then automatically resistance formula.

[01:53:52]What is the formula for resistance?

[01:53:55]R is equal to row into L by A resistance. Then mainly conductance all those things we can able to write resistivity conductivity everything we can able to write here one more thing molar conductance at any concentration capa into 1,000 upon marity equivalent conductance at any concentration capa into th00and upon normality apart from this for strong electrolyte what exactly we or strong electrolyte at any concentration is equal to molar conductance at infinite dilution minus B upon roo<unk> C. All right, molar conductivity at any concentration is equal to infinite dilution minus B upon roo<unk> C. So for strong electrolyte how the graph will be like this. For strong electrolyte for weak electrolyte the graph will be like this.

[01:55:20]For strong electrolyte what we know alpha value is equal to one. This will be alpha value will be between lesser than or equal to 0.05 05 partial dissociation. So these things are very very important.

[01:55:35]Now we know very well cold rasha.

[01:55:39]Yes. How to find out cold rashla at infinite dilution? Very simple. So at infinite dilution is equal to not infinite dilution everything is same we can represent in any way. So is equal to capa into,000 upon solubility. How to find out solubility from solubility product x ^ x into y ^ y s ^ x + y. With the help of that we can able to find out this. Instead of solubility any other formula is there simply we can able to add for example lambda infinity m of ax y salt. How we can able to write lambda infinity of x a?

[01:56:23]I will write like this. Lambda infinity of a y + lambda infinity molar conductivity molar conductivity of y once again once again once again a x b y salt. So how it will get dissociated? X into lambda infinity of M X A Y + Y into lambda infinity M of BX minus if suppose I'm writing for equivalent conductivity what is the difference we can able to write equivalent conductivity means equivalent conductivity of a Y + equivalent conductivity of BX minus What is the difference you guys can able to understand here remember one thing whenever I'm dealing with equivalent conductivity we won't consider the stochometric coefficient when it comes to molar conductivity we will consider the stochometric coefficient it is clear it is clear my dear students so this is all about electrochemistry only these two pages only these two pages please do make a note take a screenshot of this particular page. Quick in the same way take a screenshot of this particular page.

[01:57:58]So this [snorts] is all about the complete electrochemistry. So as I told in the class what we discussed complete formulas we discussed for complete physical chemistry chapter. Now what is your responsibility very simple first download the class notes.

[01:58:24]Class notes will be shared in the WhatsApp group. I believe everyone will be there in the WhatsApp right or else in the description even you guys can see our WhatsApp channel link. So first enroll in WhatsApp automatically you people will get the notes revise the notes [snorts] why today notes is very important means I discussed all the formulas in physical chemistry all the formulas so in the last minute please don't waste time revise all the formulas whatever the subtopics I given please do focus only on those subtopics related numericals now equilibrium thermodynamics redux don't forget part one of marathon 10 knots marath marathon if you watch that you will get for inorganic chemistry just follow our strategy video in 5 minutes I'm giving all the details exceptions with respect to inorganic chemistry okay it is fine so now your duty is to revise all the formulas and try to solve more and more question okay so solve question now since I given the formula sheet in today class in the next class onwards physical chemistry means what I will do I will solve only question because now you People are having complete formula sheet of prepet is fine done so download the class notes practice more and more question with this I'm finishing today class yes thank you so much sir for your effort my effort is only for you guys make use of these things download the formula sheet try to solve question even I will do in the next class onwards for inorganic chemistry stick to our channel strategy video there I'm discussing each and every inorganic chemistry tricks trend exception in less than 5 minutes that is very very sufficient more than sufficient. Okay. Okay. My dear students, take care. Bye-bye. See you in next class.