AB Sir

Hinzugefügt: 2026-05-12

[00:00:00]nathless we have seen the chemical the preparation of meters and the physical properties of meters along with the nature and all these things we have said now today we are going to study about the chemical properties of ether the administrator before going to the reactions let me tell you ethers have got a functional group that is single bond single bond where Alki prop is attached to it either the same era tiny group on either side all we have different are carriers now you can see the structure itself it shows that this inert in nature why it is in ER because these two group are the electron donor group al-qaeda group an electron donor so it increases electron density of the oxygen either sorry due to which what you find is that this have ten groups they repel one another and do repulsion is been unstable in nature because now you may say that if it is unstable it should be more reactive see unstable means if the reactant when they react and if it is unstable then it is more yet but here what I find is that the group is copper I said it is inert in nature in not inert this particular group it is inert in nature because what do you find is here I will conclude the donor it gives electron to this particular oxygen which is already electron rich it is having two lone pairs it does not want us what against electron but we are pumping to its we are increasing the electron density due to which the structure becomes for agency that is unstable because when you do the repulsion the steric hindrance so hence the functional group itself becomes inert in nature compared to the Oh H group in alcohol in alcohol we find the voyage group which is much more polar and much more reactive in nature you have seen alcohol that there is a reaction of the a chopper the reaction of the voyage group the reaction due to the alcohol as a whole and so many other type of reactions we have seen it yeah but here the reactions are limited again I repeat do the inert nature of this functional group or a give the inert nature of this function group it is having very less reactions so hence we will see that very limited number of reactions will be seeing it here somebody can say if the reason also the wide undergoes first of all ethers and it reacts with halogens when it reacts with halogens ethers like suppose I take here c2h5oh c2h5 plus CL 2 in presence of dark for it in presence of done what do you happen what will happen is that you be getting C it's 3 here just am breaking on this one okay CH 3 then CH 2 is there is one H is replaced by CL and we get it here I don't have the place I am writing it in this way or you can do a thing we will get confuse otherwise let me write the product here CH 3 c XC l o then another CH 2 then seriously thank you see when hydrogen is still replaced by chlorine bad that hydrogen goes it combines with another chlorine from here to form X here all right now suppose another chlorine it reacts same in presence of dark so what do you find is that see X 3 now see HCl so one Alpharetta Madhurima be listening after the functional to the carbonate is called alpha alpha this is your beta carbon so one alpha hydrogen atom is removed by the CL now what will I do I remove the another one so if it is alpha discovers and beta so this particular calculation has alpha - but it and this is beta - minded so in this a but more version I have removed here and I've added X here I have a red seal for it already yes here and here what we'll be getting minus X because here I have taken two chlorine atoms so one chlorine atom is coming here another chlorine atom is combining with the hydrogen which is replaced during concerts here so what are you get the compound you get it here nothing but that is a mono chlorinated ether and here you get it a tie chlorinated it alright mono chlorinated ether you will say the name of the compound is alpha puro die type ether here is alpha alpha - or you say no this is alpha digital products as use so alpha alpha - dichloro diethyl ether sorry alpha alpha dash diet your diet i'll ether you get it same presence of dark you get this particular reactions because only that is alpha hydrogen is being removed we can start yeah now the same reaction if i do in presence of lights the same - direct light or simply nightly I write it down like means sunlight for it the verdict happens if I do in presence of light so you know that halogens in presence of light the reactivity increases how did you read in the lower classes h2 plus here in to in presence of sunlight it gives an explosive reactions to form HCl you've studied so in presence of light what do you find aside all the hydrogen's are placed all the hydrogen's that is you'll be getting that is C to C at 5o c to c l5 + what happens how many atoms there 5+5 10 hydrogen so it will form one 10 HCl so hence how many hide chlorine you required here 10 0 why because 5+5 10 chlorine gear 10 prevents it is 20 puri required so what is the compound is found here 500 die - fire chloro we can say that it is nothing but more than two or three we can say the spa cancer yeah since / qø die Kyle Etha big Eric in presence of like all the hydrogen is being replaced by chlorine right next is ETA it forms pair offsets c2h5 I write it in this way why you will come to know then c2h5 here this before I can if I have taken very it reacts in presence of light and air this oxygen from air I get it from a little bit this oxygen I get it from here so when it reacts in presence of night in here like excellent all right what will happen this pair of electron will go here and what is going to happen here yeah I'm going to get that is nothing but c2h5oh state which pipe it gives a pair of electron to this one oxygen atom paco2 means were on absorption later and it forms what we're oxides you can see that it forms a peroxide so what is this as it is called as an ethereal peroxide but simple it gives a pair of electron to this oxygen atom to form what is that there are signs force it supporting it but we can see and what is this unless it carrier oxide then let me tell you a little bit about a theory attacks you clear peroxide is high explosive correct it's highly explosive it's real peroxides before using the ether we need to make sure that it does not contain any peroxide before using the ether you need to make sure that it man it does not contain any charoset how do you make sure what it is that if you are if you have stored in ether for that reason what you know is that ether is just like chloroform this it's a very smaller - smaller bottle it's like 5 ml 10 ml 20 ml bottle similarly ether is also same if you are storing it up then if you are using that story table as I said you make sure that it does not contain any peroxide what you do is that you take that story to a little safe 5 ml or 2 ml you taken a test tube not it listen tells me you take 2 ml in at this tube and freshly prepared ferrous sulphate - it freshly prepared ferrous sulphate you adequate then you add ta CNS solution potassium thiocyanate solution you are it put what I say you come up the store 1 2 ml or 5 ml orderlies I freshly prepared ferrous sulphate and and kzns potassium thiocyanate if it gives you red color the solution gives you a red color that means it is being contaminated with peroxides ether contains peroxide now the question is fine it protects the rocks how did it move that you have to watch this particular ether either with ferrous sulfate always come catch - so when you wash it with Conchas to support or with peroxide it this peroxide is being removed this one is being removed because Scott concentrated sulfuric acid acts at the dehydrating agent and ferrous sulphate what it will do is that it will get oxidized to suburbs are it in presence of this particular season as a result peroxide is being removed in this way if it is found how will you find now it is containing peroxide and how will you remove the oxide nitrogen in our exes after that ether pig forms of zone your sort of zone iam sorry so absorber means it is enough of two words oxygen and young monoxide is having positive charge I told you already are here also that if the name of the radical ends in young like ammonium hydronium to ammonium that means it is having a constitution so Exuma means positive touch correct how it is being formed see suppose I have taken here c2h5oh c2h5 I react with complex ele what it's need to fog here pair of electron is there now what is going to form here see c2h5oh c2h5 one pair of electron goes to this H+ I pump itself into our it plus a minus this red X plus a minus so one pair of electron goes to this h plus sign what I said it's plus one pair of network and say minuses yeah so it forms a mod on Sonya sword you can see on Sonya boxing is having positive charge that the option is losing now it's having positive charge so you found some hours early on salt this video saying instead of X choose X here you can take h2so4 what are you going to get it here engine here hso4 minus because H to support will dissociate to give you h and edges of we'll begin an oxonium sorry alright now the question is here the auxiliary side remember it's unstable image it is unstable auxiliaries disregard now if you die you get again you get back the g'tok if you dilute it a little you'll again get back that user why because of dilution itself dissolves in yeah in this now what is the use of this observance on basically oxygen so it is being this method is used to remove if ether is having that is or you can say al-qaeda right in it if Peter is having al-qaeda I suppose I am having ether c2h5oh c2h5 okay and I am also having c2h5 CL luggage in ether it is present I wanted to remove this particular one what did you is that you pass it through X here you react with HCM it will found out sodium sorry this particular one which one is strain to form of sodium so we look for when I'm sorry I'm sorry if I flow rate no that's it in this way it'll already separated from ether so basically this technique our sodium salt is being used to separate Etha from any other compound like tiny flow rate as I give you an example understood that is a parasitic load is there you get with context here now ether is going to react with count it's a less than sit here but will this one react no not at all science it is miksa prett all right now next is it is going to form what you can say it will access a lewis also base but it it acts as a lewis base theorem syntax is the lewis base you can see that oxygen is donating a pair of electrons to something so if sax is a lewis base so we will see an example where ETA acts as a looseness in the next one will suit thank you very much