AB Tutorial

Added: 2026-05-18

[00:00:00]so students we are into the last part of this particular chapter there's properties of values we have discussed with you the electrophilic substitution reactions some other reactions also like cows crosses preparation of aniline and all these things you have seen now next we are going to see that is reduction reaction so see ya chlorobenzene when chloro benzene reacts with nascent hydrogen now how you get their self hydrogen you will take nickel aluminium alloy when it reacts with energy here when nickel aluminum alloy you know aluminium here it is amphoteric substance so it will react with energy to form sodium aluminate or sodium metal unit and hydrogen gas will be produced when nickel here acts as a catalyst okay so detail aluminium alloy and reacts with any which it gives any set hydrogen again I repeat Olivia will react with any which goes aluminium is amphoteric in nature alright but nickel here acts as a catalyst so what I am going to get it I am going to get benzene plus at C and we can say that benzene plus it's silencer so you can say this is a conversion convert chlorobenzene to benzene because next we will see when chlorobenzene is reacting with that is nothing but sodium now last class Excel and chloro benzene reacts with magnesium which reacts with lithium chloramines and any a chlorobenzene of bromobenzene are hydrogen's in right right I'm talking to you when it reacts with lithium but we have seen it's is that we have seen that is benzene ring and the first question Li so you are getting and organo metallic compounding alkyl halides also we have seen that is we are getting or you cannot metric comparison here also the same thing so chlorobenzene is going to react with but against a lithium or magnesia once more if you want to see I can write it and I can show you once again so that is equal or pH African take ether or thfe our axis of our inert solvent inert solvent what it does it provides a medium to carry out direction it does not participate in the reaction just go exit medium or it's ether audience er th of you are THF is what tetra hydro for us it is a cyclic ether with answer that so what are you going to get it I am going to get that is nothing but an organically from for what is that and GCL see if I take here be our body like it in gbr if ready here I gotta like MGI so you are going to get an organometallic compounds you're going to get it alright now what I have seen use that suppose it's not an ignition if I take a lie lithium what are you doing so here you are going to get listen carefully that is if I take e TM here lithium all right so what I already read it a lie a benzene great first question li plus Eliza okay o li BR but the are I collide you have taken it whatever that is FX I think it's gear okay now Nexus here you will see some named reaction also we are we saying it for example first one I am writing it is your fatigue reaction fit it let me write here fi e e IE g that is your sweetie reaction 50 so here chlorobenzene plus sodium plus another pure opens in fact in presence of same thing I can take here equal or theater it acts as an inert solvent it just provides a medium so what I'm going to get it is notice that I am going to get - I this is your - I see - benzene ring - a plus here I dig to sodium to any they actually - chlorine to convert to any sea level I don't have a space here and name still I'm adding it here so - NaCl you beginning it so this is what is this compound is - I dive in and this reaction is on ice fatigue reaction similarly we are having we have having Goods fatigue reaction would be the reaction so you have seen the roots reaction that is in class 12 in this chapter II of sorry in 11 also your city hear what I said you pulse 50 reaction same thing chloro benzene plus 2 na plus here in alkyne halide you take any untangle a ch3 CLO C 2 C 2 H 5 CL or six three eight seven seventy in presence of again ether what I am going to get it I am going to get a very important compounder it is that is tall wing all right and to na CL not it's so again it is conversion chlorobenzene to Don Lane began sir that suppose if I take here C 2h fights you get one benzene ring c2h5 does if I benzene so each other I hope you are taking it here correspondingly that particular compound you are going to get it with the benzene ring okay so that is all right this particular compound is known as Li alkyne upon pick answer that okay this is my fine so what is this reaction for this oops fatigue reaction w you are easy horse fatigue reaction next is we are going to do that is your man reaction this is also called as and one by arises Alvin biosynthesis say yeah I have to take here that is I do benzene and here the copper again another I have the benzene are detained and this is meeting it in a Serie tube and a glass tube in a sealed glass you and me giving it so what I am going to get it is that same thing diphenyl I am going to get it this is - I as you can see plus you are going to get see you - I - I am going to get it so this is an ass man reaction we do al man reacts with iodine xenon not chloro bromo benzene we dip it here okay so this is your unmanned Gretsch so next we'll have after this so we have seen it that is nothing but this this reaction we have seen reduction reaction you've seen it then the reaction with different what you can say halides we have seen this particular reaction okay now next what we are going to see is that there is a poly halogen come box only halogen compounds we began so that now under poly halogen compounds what we are having here Harry methylene chloride we are having chloroform we are having carbon tetrachloride now how do you get it remember you have studied in class 11 that is halogenation of alkenes ch4 plus c2 what do you get CS 3 CL plus HCL in presence of UV light then C 3 CL + CL - what is what is that your grade CH 2 CL correspondingly you'll be getting chcl3 and cecile 4 respectively we can say that so this is only halogen compounds we can say that similarly you can prepare chloroform from carbon tetrachloride also how you can prepare CCL 4 when it is reduced when it undergoes reduction in any reducing agent you will be doing any reducing agent for example I am taking a zinc and it's here what are you get nice in hydrogen but what but what I am going to eat it here that is nothing but CX c + 3 plus HCl this is your chloroform I am going in this way you can also prepare chloroform okay so this is poly halogen a bouncing answer that still you're having some more compounds we are having it but it is freon and all sinks so there didn't go great in your book that is free on we are having just liquid we have two studies we are means for CFCs chlorofluorocarbons becomes that okay now it is about it I see you in the imprints class now one thing and trans students let me tell you on Sunday you will be given a V upon this particular champ it's a very important debate you will see you'll be getting it upon this chapter so please see that particular it's very important and I already said you that this chapter I am going to continue today I'm going to compute it but you do the question answers entering so it's a special anything you do the question answer from the previous book other students of course you will do the question answers from the practice paper which I have sent you and as well as and say I'm going to sell you some more important questions and maybe send you so please do it this particular chapter problem okay now Nexus will see the prevention of DDP what is unity dichloro - I'd try Kuro eating they're gonna repeat dichloro - I'll try chloro you think you can see then after that we are going to see that IUPAC name let me write the reactions let me write the product then I explain you how we got that are you listening so now how you get it see I am taking you to see CL 3 CH o this is known as blue or you can see tri fluoro acetaldehyde what is actually access procedure so three go in easy so try to track your acetaldehyde now here I am going to take it that is chlorobenzene this is one pure benzene and this is another province in I might be wondering that intervenes the hydrogen hydroxy in every fashion at a heightened state or you have highlighted this hydrogen atom which is being presented I have highlighted it that's it what a direct others in every position ch-ch-ch is there okay now next when it reacts with h2 so4 pump you know it's joseph for punk is a lot dehydrating aged it helps in the removal of water for that reason i have taken extra support on because I don't take this reaction is not gonna take place so exclusive for Punk is very important now you might you will understand it the way I wrote the compound with this way because here what I am going to do see here what I am i moving water h2o because what I said h2o super cabeza dehydrating agent it helps in dribble of one so whatever is left that is your dignity so what is left see ya see CL 3 there is CH here one born with this particular one and I ring another another plus water h2 is being produced this is your DVD now we will see that I you be listening so this is your first travel this is your second car so in the second time I didn't see - I like Alexis there okay now here in the second car - to miss now enjoy it that if in the same carbon atom listen carefully using the same algorithm similar group is attached there is no less what this - similar code is attached in soon as this if 3 then trysts if for similar groups that practice in this way will go on but it's too similar group so what is this similar group is para puro phenyl how it is Pat see first second third fourth so this path say this para Q Rho V 9 so - to be since second carbon atom we are having this - - - this ferret or goofy night and in the first carbon atom 3 chlorine atom is there you can see CL 3 1 1 1 what is that tri fluoro right Lauro 3 Corinne now how many come back - so this it and what is that single bonds it is and so hence IPC name is - to this chlorine I 1 1 1 try to you came this is your DBT now deity is actually an insecticide previously it was used now now it is no more used because it is not biodegradable it is non biodegradable this is nothing it is not soluble in water it is insoluble in water initially because you besides but now it has been seen that there it is very hazardous especially to animals human beings and the maggots all right so hence it is no one used this particular insecticides the next one they will do easier bxe benzene hexachloride or it is otherwise known as damage seen or other is known as lindane we can select so what I am going to do I am going to take benzene plus chlorine but it in presence of HQ or UV light we can say that what I need to get it I am going to get that is 6 chlorine atoms not it Plus now six hydrogen is removed here say the six chlorine atoms six and I'm saying this we added so six fluorine atoms is being added it so this is one as fine b HC b and c benzene hexachloride C benzene hexachloride what is known as lindane what it is unless galaxy you know diversities use use for it is used to Tilda that is red ants or insects we can say that it's also insecticides so in this way this is a preparation of DN C that is now vaccine now so this is all about the reactions now you will be reading the questions in this chapter very important question is that that how to differentiate between arrive highlights and alkaloids for example if I am giving you chloro benzene chlorobenzene and chloro hexane let us see how we differentiate it now here you see chlorobenzene this is co chlorobenzene we can say chlorobenzene yeah and chloro hexane 6 carbon atoms will be there 1 2 3 4 5 6 and Cl of course we'll put the hydrogen ch2 ch2 - see fine so yeah Marty Feinstein this chlorine atom listen carefully this chlorine atom which is attached to the alkyne group or the Pens I do all right or that Allah group nobody spends I benzine means this is your benzene benzene ring ch2 group is on a spot Benz I let me refer to this one benzene ring ch2 sauna spot been side so what I said things I do other what I said Allah good hell I'd means this easier I like CH double bond CH 2 this is your light so it is Alki Benz I and alight so when the halogen atom is attached to either put a little group or to the benzine group or to the Liu the halogen atom is known as labelled in nature ie means which is reactive but activist attacks on arrival or attacks to VIN ie grow CH 2 double bonds here this is your V 9 vinegar that is not to be exactly as inert in nature inert it is sir - yes when the halogen atoms attached to them that is awry or to the beam I drove in ie that is known as inert in nature in art which it is not going to react it is not going to be replaced so what I'm going to do what are you do that you do what is different shapes so how to differentiate I take chlorobenzene and I will take this two compounds in both the compounds first really hard that is in average or K which I was are allegorical so what is going to turn now this is going to get with any major K which are personal conduct to for alcohol like here hexa chloride or chlorhexidine is going to fall hex on on but this is not going to react with it what I said you the chlorine atom attached to it is inert in nature here the chlorine atom attached to you this Labine nature this this this yeah because of that libido which is reactive so using uniform white hexanol now what do you decide right dye that is dilute HNO 3 to acidify alright and then I saw silver nitrate solution put what I say after forming X and all you are magic that you know three to acidify and axilor nitrate solution you will get that white bt t here but here no such reactions in this way you can differentiate between chlorobenzene ax clove ik same because of that now it's supposed Romeo bro is that they grow in here bro so same you do it same thing you do you'll add first anyway chopped toh hackers are iconic then I die you get you know three dense silver nitrate you will be getting pale yellow PPT alright with this with this little tiny not with this no reaction so this this this or this you'll be getting pale yellow PPT but with Vinay and awry no such reactions limited so this is different shapes between chlorobenzene clover mixing or it may come here example Penn's IQ right chlorobenzene in this way or a like law right Vinayak producer different type of questions will beginning so just one answer remember it I said before so this is a test to different sheet between the compounds thank you very much