SOLUTION | LECTURE - 04 BY SOURAVA SIR | CLASS - XII CHEMISTRY | PPM | NORMALITY

[00:00:03][music] >> Jj math came to have a good time with you.

[00:00:15]I'm a YouTube channel for the by Google go to the manual to get Gucci.

[00:00:21]So I do I mean solution chapter lecture number four for you.

[00:00:25]The lecture number four and I make on convert Korea.

[00:00:28]PPM and a part per million. Normality.

[00:00:32]Then relationship between molarity and normality for you. I will toss it out get you below below questions of Korea.

[00:00:38]The challenge class that Korea.

[00:00:44]If you want to put your part per million or the cool shortcut to PPM Korea.

[00:00:49]The theory going to get you.

[00:00:54]It is defined as number of parts of solute present in 10 to the power six part of solution.

[00:01:03]Money.

[00:01:04]The mega the solution cool good 10 million part Korea.

[00:01:08]Good 10 million money 10 to the power six.

[00:01:10]The good the solution good 10 to the power six part Korea.

[00:01:14]10 to the power six part of solution rule get the part of solute rule rule.

[00:01:19]The good the solution of PPM of part per million Korea. The matter of something that part per million. Money solution come on million part Korea.

[00:01:29]The good the part of the solution that is called PPM.

[00:01:32]I'm a percentage of the conquer today.

[00:01:34]I'm a solution good so high part Korea.

[00:01:36]The good the good the part solution rule that could percentage of the represent Korea.

[00:01:41]PPM of solution good good 10 million part Korea money 10 to the power six part Korea that could rule get the part solution that is called PPM.

[00:01:49]Say that the definition of the canal at the second definition second point going to get the letter.

[00:01:54]PPM can also be expressed in terms of mass to mass, volume to volume, and mass to volume.

[00:02:23]Next point generally this term used when very small amount of solute is present in solution.

[00:02:37]Generally, But you know, that Every move people We direct formula like it would you They go first formula Mass by mass term represent calling The letter is well Mass of solute Mass of solute it is literally in gram divided by Mass of solution It is literally in gram into 10 to the power 6.

[00:03:20]Mass of solute in gram by mass of solution in gram into 10 to the power 6.

[00:03:24]Same thing that you move people you move people you move Mass by volume term represent calling The letter is well mass of solute in gram divided by volume of solution in ml into 10 to the power 6.

[00:03:46]I tell you that you move people you move volume by volume term represent calling The letter formula is well volume of solute in ml divided by volume of solution in ml into 10 to the power six.

[00:04:08]>> [snorts] >> Mass by mass percentage of a formula to the left.

[00:04:18]Mass of solute by mass of solution into 10 to the power two.

[00:04:27]I don't know what you like very much of solute.

[00:04:32]in gram divided by mass of solute in gram divided by mass of solution in gram into 10 to the power two into 10 to the power four.

[00:04:53]Huh?

[00:04:54]I don't know.

[00:04:55]Mass of solute by mass of solution into 10 to the power two. I don't know what that is. I don't know what a percentage mass by mass by mass percentage.

[00:05:06]PPM in terms of mass by mass get the over.

[00:05:09]Not percentage mass by mass.

[00:05:13]into 10 to the power four Mass percentage of the mass percentage I don't know PPM in terms of mass by mass by the way.

[00:05:24]PPM in terms of mass by volume that formula not percentage mass by volume.

[00:05:32]into 10 to the power four PPM in terms of volume by volume not percentage volume by volume. into 10 to the power four I don't know what the percentage of concentration of that you I don't know what that could tend to the power four that you multiply for the way.

[00:05:51]PPM 10 to the power 4 steel plant plant area that you want to go to gently LED display type pollutant gas concentration That has per government guidelines on Google sulfur dioxide, nitrogen dioxide, carbon monoxide, ozone, ammonia unit of PPM PPM PPM For example, sulfur dioxide new sulfur dioxide concentration 0.010 PPM It volume by volume tournament AG because air that I would you know the volume by volume tournament 8 e the meaning that I have key 0.010 that money 0.010 ml of SO2 gas present in present in 10 to the power 6 ml of air money AG LED board that you do area that I like it see say area that I had to miss Peru that I would 10 to the power 6 ml of air new to the net that I would tell me that 0.010 ml of sulfur dioxide 0.010 ml sulfur dioxide to I will let you say 10 to the power 6 ml of air no dinner Daletovic nitrogen dioxide get a TV on a 0.012 ml carbon monoxide get a TV on a 1.25 ml of would you just not be only Danny but your PPM connect with corner PPM of PPM running every day call call carbon concentration of the garden carbon monoxide or the garden 1.25 money 10 to the power 6 ml of air sample mode of the same area or maybe Daletovic SO2 TV 0.010 ml and not to TV 0.018 ml carbon monoxide to 1.25 ml ozone TV 0.021 ml or ammonia gas TV 0.05 ml clear OG not good deal about the question that yeah PPM of question that when 1.04 gram of barium chloride is present in 10 to the power 5 gram of solution the concentration of solution is how much money Daletovic 10 to the power 5 gram of solution and I get say solution 1.04 gram of barium chloride Daletovic concentration of PPM carrier OG for a direct formula for answer value needed to get right call first Daletovic move on to I tell him what they take on the easy mass of solution that they did you mass of solute that they did you the PPM that go down in the mobile career mass by mass to money to buy a career in the question that he done is keep going PPM go down in the mobile career mass by mass no mass by volume no volume by volume take OG I tell him money 80 more take of mass by mass that formula can liquid only now liquid in mass of solute in gram divided by mass of solution in gram into 10 to the power 6 mass of solution 10 to the power 5 beta program achieve into 10 to the power 6 that you 10 to the power 5 10 to the power 6 10 to the 1.04 into 10 to the power 10.4 the money barium chloride concentration get out of 10.4 ppm and option B is the correct answer would you allow both easy question not going to next question that go >> [clears throat] >> question the solution contains 0.005% w by w NaCl express its concentration in ppm money with the solution rate NaCl concentration when NaCl a solution in NaCl a concentration percentage mass by mass 0.005 w by w money mass percentage now the money go ppm convert to connect to try to go never the commercial come on go direct formula go Italy so what about the corner ppm in terms of mass by mass the second over the other percentage mass by mass into 10 to the power 4 percentage rate 10 to the power 4 multiply ppm to go the percentage mass by mass 0.005 the other 10 to the power 4 multiply the other 10 to the other 50 the money concentration of NaCl to go concentration of NaCl concentration of Correct answer.

[00:11:45]Next question question a solution contains 35.55 ppm of chloride ion calculate its molarity.

[00:11:56]Chloride ion concentration that Easy question.

[00:12:07]Ppm molarity convert Korea.

[00:12:21]Ppm 35.55 ppm Jhe to molarity party The molarity but that Thunder Danny but to a company Jody M by m i molarity Thunder density of solution the Thunder question.

[00:13:10]Money The m by V the direct method Molarity but that period So 80 m by m what the molarity density that I mean move up the 80 >> Okay.

[00:13:49]10 to the power 6 ml of solution contains 35.55 g of chloride ion.

[00:14:04]And now Okay.

[00:14:16]small m1 by capital M1 into 1000 divided by V.

[00:14:25]35.55 g of chloride ion But a small m1 get the usual 35.55 g.

[00:14:31]I got the capital M1 corner.

[00:14:35]Chlorine not chloride or say because The molar mass chlorine not 35.5 the chloride or B 35.5.

[00:14:47]Next the volume of solution. Volume of solution is a liquid in a 10 to the power 6 ml to be a 10 to the power 6 ml.

[00:14:54]You better have put cordial.

[00:14:56]35.55 by 35.5 into 10 to the 1000 by volume of 10 to the power 6.

[00:15:05]The letter almost one is equal to answer as you get the 10 to the power 3.

[00:15:10]I mean molarity of solution get the usual the 10 to the power 3 moles per liter. Would you like not good deal.

[00:15:22]About the question Korea question as to the JMA >> [clears throat] >> The next concentration comes from everybody normality.

[00:19:22]It is defined as number of gram equivalent of solute dissolved in 1000 ml of solution.

[00:19:42]Solute normality in that solution quality.

[00:19:47]Get the gram equivalent of solute dissolved in water.

[00:19:52]normality 1000 ml of solution get the moles of solute dissolved solution gram equivalent of solute dissolved in water Okay.

[00:20:11]80 grams of grams equivalent I can receive all the energy money number of gram equivalent of given mass by gram equivalent mass.

[00:20:27]Given mass by gram equivalent mass.

[00:20:32]gram equivalent mass corner Jollibee tomato salad equivalent and mass of our water video upload both zombie I must have a payment number of gram equivalent of water given mass by gram equivalent mass. I given master gram of water that can number of moles of formula controller given mass in gram by molar mass by gram molecular mass any gram molecular mass that a gram equivalent mass like I do Okay. I don't know about normality of expression. The Bible He would take container to Manila.

[00:21:10]He got there. container terminal I think it's a solvent like below.

[00:21:15]I'll say solvent kitchen. Solute below also solute mass small M1 ground.

[00:21:22]I'll solute for the love of it. I could go with a little solution prepared a gala. solution prepared a lot for it.

[00:21:28]Final volume gala ml which is V. V ml gala. Final volume of solution. Take a chi.

[00:21:36]I got you. Tell him what he could he key.

[00:21:39]V ml of solution V ml of solution contains small M1 gram of solute.

[00:21:50]on a night I got you.

[00:21:52]Tell him what he could he give V ml of solution contains small M1 by e at the key gram equivalent of solute.

[00:22:03]I got to be going to be going to be going to be going to be because small M1 given mass in gram e hello gram equivalent mass. Tell him a small M1 by e hello number of gram equivalent. I'm going to be ml of solution at the key gram equivalent of solute content color.

[00:22:18]I got you.

[00:22:19]Tell him.

[00:22:21]1 ml of solution can take on 10 color.

[00:22:25]small M1 by e into 1 by V at the key gram equivalent of solute. on a night Tell him 1000 ml of solution content color. small M1 by e into 1000 divided by V at the key gram equivalent of solute.

[00:22:45]on a night I would like a normal definition to alter the corner definition. It is defined as number of gram equivalent of solute dissolved in 1000 ml of solution. I got you ml of solution at the key gram equivalent of solute dissolved in a lot.

[00:23:00]I could normality color. I want to buy a Harley color. Now I had normality normality formula normality formula small M1 by E in 2000 divided by V >> [snorts] >> It is small M1 in given mass of solute in gram.

[00:23:29]E at the liquid solution E hello gram equivalent mass of solute.

[00:23:38]Okay, I'll see more of the normal V move somewhere use volume of solution in ml by It is a small M1 given mass in gram and gram equivalent mass. That is the common number of gram equivalent volume to the data.

[00:23:55]NGE volume equivalent NGE money number of gram equivalent of solute. I say beta the volume of solution in ml a whole lot of volume volume of solution in liter. Then normality I would have formula that is NGE divided by volume in liter.

[00:24:17]A NGE at the liquid solution NGE hello number of gram equivalent of solute.

[00:24:27]The normality data with the formula in the data formula in the data formula against the I say normality unit number The NGE data number of gram equivalent beta volume in liter that my unit gram equivalent gram equivalent into liter inverse on a night.

[00:24:49]The molarity unit mole into liter inverse normality unit gram equivalent into liter inverse.

[00:24:57]I would have normality formula volume of I would have answered.

[00:25:09]Like molarity.

[00:25:15]I would have answered.

[00:25:18]Normal liter formula gram equivalent mass.

[00:25:25]Gram equivalent Equivalent mass.

[00:25:33]A all got a video more upload career both gently, but still Short cut the career Gram equivalent mass.

[00:25:54]E is equal to molar mass by n factor.

[00:26:01]Gram equivalent mass.

[00:26:09]Divide the talent.

[00:26:12]Gram equivalent mass.

[00:26:14]Same to the equivalent mass which are you the molecular mass divided by n factor called the way.

[00:26:19]The gram equivalent mass which are you the gram molecular mass by molar mass by n factor called the way.

[00:26:28]Gram equivalent equivalent mass.

[00:26:37]M molar mass.

[00:26:44]N factor by the equivalent factor will be called the way.

[00:26:51]A formula that not called the way next slide I mean n factor n factor gram equivalent mass by equivalent calculation of valency factor and factor case one for neutral element n factor neutral element by of the element when the Joe element valency n factor example suppose when I leave suppose sodium sodium n factor of a one because the valency which is one suppose magnesium magnesium n factor of a two suppose calcium n factor two hydrogen n factor one chlorine n factor one valency question element multiple valency valency factor multiple valency so so n factor n factor suppose iron iron two valency three valency so n factor suppose Fe2O3 compound the law Fe2O3 Fe iron valency so n factor so Fe2O3 iron valency iron valency a case so a case so iron n factor so three but same suppose FeO Suppose ferrous oxide Fe.

[00:28:57]I don't know n factor get there. Now if ferrous oxide there I don't know valence get there. I don't know valence would be two. Oxygen not be two, I don't know be two. That means that the n factor get there you want.

[00:29:08]two Would you know would you want me?

[00:29:12]I don't multiple valence show color 80 show color three valence 80 show color two valence into a case there.

[00:29:18]n factor is what three case n factor is what two.

[00:29:21]Clear or not clear or not? Okay, not good there.

[00:29:27]Case two, case two and a four ions.

[00:29:30]Do the ions that you want to get that that by n factor and a lot.

[00:29:34]Charge on the ion.

[00:29:37]Charge on the ion. Example I will go with you.

[00:29:41]Suppose I will go with you sodium ion Na+.

[00:29:44]Na+ element and I need it out ion in yellow. I don't know that charge. Charge get there plus one that n factor get there you want. one Suppose I will go with you magnesium ion Mg+2. That n factor get there you want.

[00:29:55]two Suppose I will go with you Al+3.

[00:29:58]That n factor get there you want.

[00:30:00]Now three. Suppose I will go with you sulfate ion SO4 2-. That n factor get there. Now two. Suppose I will go with you phosphate ion PO4 -3. That n factor get there you want now three. Suppose I will go with you ammonium ion NH4+. That n factor get there you want now one charge.

[00:30:18]That one and Do the more pocket there ions that you see that let say ion not charge that n factor.

[00:30:24]Clear or not clear or not? Not good there.

[00:30:29]Case three and a four acid.

[00:30:32]And a four acid n factor that a lot for acid n factor that a lot basicity basicity of acid.

[00:31:19]number of H+ ion an acid molecule can give in its aqueous solution.

[00:31:40]in factor 10 Suppose you have hydrochloric acid. You can double H+ or Cl- good H+ double the in factor get the double one.

[00:31:50]Suppose we call it sulfuric acid H2SO4.

[00:31:54]You can double 2H+ + SO4 2- I just suppose we call it H3PO4.

[00:32:06]Phosphoric acid you can double 3H+ + PO4 -3 phosphorous acid You can double 2H+ + HPO3 -2 30 in factor 2 way one of the priority typical example 30 in factor 3 H3PO3 H3PO3 30 in factor 3 yes plus H2 PO2 minus Anadala hypophosphorous acid.

[00:33:57]phosphoric acid H3PO4 phosphorous acid H3PO3 Anadala Hypo phosphorous acid.

[00:34:49]H3 PO2 Phosphoric acid, phosphorous acid, hypophosphorous acid.

[00:34:58]Phosphorous, hypo Okay, second. I have a spelling that I mistake with you. 8 seconds.

[00:35:07]8 seconds.

[00:35:10]Spelling that I get mistake with you.

[00:35:30]Hypo phos Okay. Everything is going to be okay.

[00:35:41]Think that I go structure more draw for the day. Phosphoric acid, phosphorous acid, hypophosphorous acid. Everything is going to be okay.

[00:35:49]Oxygen bond say hydrogen replaceable. I don't say what you did it up to find a pocket and say hydrogen quantity. Everything is going to be okay. S3PO4 day. Everything is going to be okay. Everything is going to be okay. Oxygen bond quantity.

[00:36:03]Everything is going to be okay. Hydrogen for the day. Everything is going to be okay. Everything is going to not three Phosphorous acid is okay. Everything is going to be okay. Oxygen bond quantity.

[00:36:15]Everything is going to be okay.

[00:36:16]Phosphorous bond quantity. Everything is going to be okay. Phosphorous bond quantity. Everything is going to be Oxygen quantity.

[00:36:23]Everything is going to be okay. The hydrogen beta in time. Everything is going to be okay. Everything is going to be okay. Two.

[00:36:29]>> Hypophosphorous acid when it's 3 PO2 rate Typical example of money for you Oxygen that it does she That number minus one by video S3 po4 tacos S3 po3 tacos in my minus 82 S3 po2 tacos in a 2 minus 88 Empty money but we suggest actual general structure actual general general The note could do Acha I'm a political acid or n Factor can be back Korea manager delete I'm a equivalent master acid of our Korea The murder question do you do you to do you question that you try to go Question find equivalent mass of First video H2S 04 Second video H2S 04 in the following reaction The past video H2S 04 equivalent master Korea achieve Second video question in today lucky H2S 04 in following reaction The Kenya video Gucci Korea try to go to the movie Every day come over to you Past video about to do you some of the answer by the video Past video about to do you answer that could you Amazon key Gram equivalent mass is equal to molar mass by n Factor The equivalent mass is equal to get the usual molecular mass by n Factor The suppose equivalent mass communal e Our molecular mass communal m The m by n Factor Our H2S 04 molecular mass could have a 98 Our 4 2 2 minus 39 39 second bit second bit H2SO4 equivalent action equivalent master now so reaction respect for the day particular reaction substance equivalent H2SO4 money H2SO4 maximum the question the reaction a reaction H2SO4 reaction H2SO4 H2SO4 acid corner basic ticket a reaction H2SO4 H2SO4 a reaction in a factor a reaction that a reaction H2SO4 hydroxide sodium hydrogen sulfate a reaction H2SO4 yeah I have a H plus HSO4 minus na n a plus which minus H video You H plus or H minus we see water color the light.

[00:40:24]Oh, and a plus or HSO4 minus missing one form color and HSO4.

[00:40:29]sodium hydrogen sulfate Would you like to know what you want to tell my name a reaction name H2SO4 get the right close the light now go to H plus the light now go to name a for second bit.

[00:40:40]and factor get the over one come on the equivalent mass get the over equivalent mass is equal to molecular mass by n factor when a 98 divided by one over 98.

[00:40:53]Clear over to not clear over name it over important matter.

[00:40:57]follow question that not good deal that for a good deal but I think case for a lot for base one of the for base and factor that for base and factor that acidity of base What a base acidity don't go to tell me sir acidity corner the acidity in the light acidity in the light number of OH- ion a base molecule can produce in its aqueous solution.

[00:41:40]What a base that aqueous solution that what a base molecule get the data OH- ion double that could say base that one question acidity question the guy example molecular Suppose we will go to be sodium hydroxide.

[00:41:55]Tell me you can double you double and a plus or OH- What can I double OH- the n factor get the over one suppose we will go to be barium hydroxide BAOH2 tell me you can double BA plus two plus two OH- data OH- double that the n factor get the over two and tell me suppose we will go to be Tell me L plus 3 plus 3 OH minus.

[00:42:19]Tell me n factor 2 get the over.

[00:42:21]3 I tell you suppose more really BOH3 I put a little key out of n factor get the over.

[00:42:31]I tell you you double B plus 3 plus 3 OH minus.

[00:42:36]The n factor over 3, but this is wrong.

[00:42:40]I got the decal to base volume, but actually the base volume.

[00:42:44]I got a boric acid the go.

[00:42:46]H3BO3 that I am representing for the people.

[00:42:52]But a OH could I keep it over base volume, but actually the base volume acid.

[00:42:58]The judge the man by the people.

[00:43:03]I tell you I call the judge the man.

[00:43:05]You get a BOH4 minus plus H plus.

[00:43:11]H plus D Would you know what you want?

[00:43:13]The H plus money acid over.

[00:43:16]I got the H plus the love.

[00:43:18]The money get to the acid out of acidity acid over. Money n factor one in the money out of it.

[00:43:26]I got the common out of it.

[00:43:28]I know that common boric acid.

[00:43:33]I don't know base volume of it.

[00:43:35]Reason common reason would you boron vacant orbital type I got it out of actually I got it out of it.

[00:43:44]I got the common out of BOH3 structure over the type.

[00:43:52]The out of vacant orbital type.

[00:43:55]The suppose more water I could react water money common H plus OH minus.

[00:44:00]The water common empty liquid.

[00:44:02]OH minus plus H plus.

[00:44:04]The common winner A Joe vacant orbital boron out of it.

[00:44:10]vacant orbital say good day or minus 4 meter when I go to water molecule which minus major I'll never call of the year.

[00:44:22]Neither India to the liquid BOH4 minus always plus when I ultimately come over H plus similar that is it more going to be H plus the letter would you do that into a 2 H plus 7 major I could have a lot of money.

[00:44:39]What the water molecule with a which minus negative 2 2 H plus minute that again factor get away one way would you not go to the Never let go case 5 case 5 for salt.

[00:44:53]Salt by a man factor can be Korea.

[00:44:56]No salt by a man factor of a total charge on cations of sorry total charge of cations or anions total charge of cations or anions example very well suppose when I leave sodium chloride it out of salt you can double and a plus or C L minus 80 cat and a charge B1 and I know charge B1 2 and factor 80 get out of one suppose when I go to Italy na2so4 sodium sulfate na2so4 you can double 2 and a plus plus so42 minus it is a good 80 beta get out of a get out of a get out of beta get out of a the total charge get out of a plus 2 minute 2 I'll go to a man and a tell me charge get out of a 2 2 minute 2 call again total charge of cations or anions would you let go the 2 and a plus minute beta going to go to come with charge number 8 8 I tell next example suppose when I go to Italy uh Here the 2 AL + 3 plus 3 SO4 2 minus the magnitude of the 6 1 and 5 32 over 6 total charge of cations or anions say that I am factor next time I am going to relation between molarity and normality I tell molarity of formula 1 + a small M1 by capital M1 in 2000 / V 8 of the molarity formula normality formula already 1 + the normality formula is about small M1 by E in 2000 / V 8 e to the corner equivalent mass molarity to suppose normality say that divide by 3 small M1 small M1 cancel is 1000 / V 1000 / V cancel is 1 121 the 121 equivalent mass a sorry gram equivalent mass equivalent mass of molar mass with the relationship already to go to go to go to go to go to go the equivalent sorry gram equivalent mass is equal to molar mass by n factor the equivalent mass sorry gram equivalent mass by molar mass 1 by n factor molarity by normality now 1 / n factor.

[00:48:00]Normality n factor into molarity.

[00:48:06]The suppose solution that I can molarity normality that I can the solute n factor molarity that I can solution normality that I can be.

[00:48:21]Clear it was symbol defined by the n and a normality Normality symbol actually capital M.

[00:48:30]Capital M and a molarity.

[00:48:33]Now n f and a n factor by valency factor of solute valency factor of solute not good quality It was question what is the question?

[00:48:53]Question 9.8 g of sulfuric acid is present in 250 ml of its aqueous solution. Find the normality of solution.

[00:49:03]The question that I can try to make it clear.

[00:49:09]The cover more Gucci What question given mass of solute small M1 that I can 9.8 g solute H2SO4 molar mass 98 at the volume of solution ml 250 ml What question that I can normality that I at the normality formula that I can constant small M1 by E into 1000 / V at the normality formula at the E that I can the gram equivalent mass that I can molar mass by n factor solute that I can H2SO4 sulfuric acid that I can n factor 2 that I can molar mass that I can 98 / 2 that I can 40 I want to have a 9.8 by 49 into 1,000 divided by 250 250 / 4 Oh, 49 99.8 above I think 0.2.

[00:50:18]The 4 into 0.2 money 4 into 0.2 money answer 0.8.

[00:50:26]When a normality market available 0.8 Hence, it is a Hence, it is a 0.

[00:50:37]8 normal 0.8 normal H2SO4 solution or It is a 0.8 capital N H2SO4 solution Normal means normality 0.8 normality 0.8 0.8 capital N H2SO4 solution H2SO4 normality 0.8 molarity capital M molarity small m normality normal capital N 20.5 g of H3PO3 is dissolved in water to prepare 500 ml of solution. Calculate the normality of solution.

[00:51:47]>> Same data data for the molecular weight of solute K not phosphorus acid H3PO3.

[00:51:54]The mass of solute 20.5 g.

[00:51:59]What's the volume of solution in ml 500 ml?

[00:52:05]H3PO3 molar mass 3 into 1 phosphorus 31 oxygen 3 into 16.

[00:52:13]The answer 82.

[00:52:15]H3PO3 molar mass of 82. The normality formula small M1 by E.

[00:52:23]Into 1000 divided by V.

[00:52:26]The solute K and H3PO3 that [clears throat] equivalent mass sorry gram equivalent mass the molar mass divided by n factor at H3PO3 not a acid and H3PO3.

[00:52:42]H3PO3 n factor not 2 3 n factor 2. The gram equivalent mass 82 by 2 41.

[00:52:56]Put it there.

[00:52:58]Small M1 20.5 divided by E gram equivalent mass 41.

[00:53:05]Into 1000.

[00:53:06]Divided by V 500.

[00:53:10]The 20.5 41 2 500 2 2 by 2 1. The money answer is your one money it is a.

[00:53:19]One normal H3PO3 solution.

[00:53:23]The one the normality one is you.

[00:53:31]The I would have a question a question CHSC board exam 2023. Yeah.

[00:53:38]Question the lucky calculate the mass of sodium hydroxide required to prepare 2 L of 1.02 N by 10 solution.

[00:53:51]You can enjoy the trip.

[00:54:00]What they call the law? Now what is solution at 10 weight row? There are volume at the 2 L of normality at the 102 by 10.

[00:54:10]Age of the insulin 102 Sorry, 1.02 N by 10 means normality and which are the law of general and which are the law of general 1.02 by 10.

[00:54:22]Say the law of normality to money what the normality now 1.02 by 10 money 0.102 and normality.

[00:54:32]Our volume of solution liter of the 2 L money milliliter 2000 ml.

[00:54:37]What they call the law of mass of solute get the law?

[00:54:40]What the molar mass of solute get the law of NaOH molar mass of the 40?

[00:54:45]What the normality of formula get the law of small M1 by capital M1 Sorry.

[00:54:51]Normality of formula law normality of formula law small M1 by E in 2000 divided by V.

[00:54:59]What the small M1 money mass of solute by the small M1 get the law of N into E into V by 1000?

[00:55:09]What the money?

[00:55:10]What the E what the law of the V?

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[00:55:31]Gram equivalent mass of the law of the direct put Korea normality of the law of the 0.102 equal gram equivalent mass of got to kill it into volume of solution in ml 2000 divided by 1 1000 81 80 into 0.102 1.02 into 8 8.16 g and mass of solute 8.16 g it a lot answer the pillow money the army Charlotte class ray solution to go concentration terms to love I miss a book cover cover the letter the next lecture the solution chapter the next to the army product details of Korea the done about Jay and that