00:01
In the first part, lucas reagent, it is basically zinc chloride, ink -concentrated hydrochloric acid.
00:15
That means hcl.
00:17
Here we can say that the reaction of alcohol with lucas reagent.
00:30
Lucas reagent is going to be, we consider a tertiary alcohol reaction with hydrochloric acid this forms oh2 positive.
00:43
As we know, oxygen as lone pair.
00:45
So, loan pair attacks the hydrogen.
00:47
And this will have a cl negative generated.
00:50
Now this, what happens is we have a cl negative ion.
00:54
So, first of all, there will be formation of a carbogation.
00:57
So formation of carbonate ion in this fashion.
01:01
Now what will happen? the cl minus which is there is going to attack the carbocotion.
01:05
And then we are going to get cls.
01:09
So this is the reaction.
01:10
Here we can say that reactivity order, reactivity order of alcohol is going to be maximum for tertiary, then secondary and then primary.
01:25
And this is due to the formation of carbocotin stable, carbocotin is tertiary one.
01:37
And then secondary and then primary.
01:38
That is the reason tertiary react tertiary carbocotin is more stable and therefore tertiary alcohol will be most reactive in this case.
01:46
In the second part, chemical formula given of the alcohol is c4h10 oxygen.
01:57
In this case, it is said that reacts slowly with sodium and gives positive test for an aoi.
02:17
From this, we can say that it cannot be primary.
02:20
It cannot be primary alcohol as in the class of primary alcohol only ethanol is the one ethanol gives positive naoi test and rest of the primary alcohol does not give the naoi test and that is the reason we can discard that option of primary alcohol because we have c4 h10o and ethanol is c2 h5 or we can just write down c2 h6 o over here so it is completely different chemical formula hence we can discard the option of primary alcohol so primary alcohol reacts also there is another thing that primary alcohol reacts vigorously with sodium but here it is reacting very slowly and that is the reason primary alcohols cannot be the one there are two possible structures now that is of secondary alcohol and tertiary alcohol so for secondary alcohol if we consider we can have is ch3 ch2 choh and ch3.
03:32
This is our secondary alcohol.
03:36
Reaction with n -a -o -i forms ch3, ch2, c double bond o, ch3 plus chi -3.
03:52
And another possible structure is c -c -ch3, ch3, ch3, here we will have oh, so this becomes a tertiary alcohol.
04:05
So in the case of tertiary alcohol this is tertiary alcohol so the reaction with n aoi forms no product that means no reaction takes place between the tertiary alcohol and also the primary alcohol does not give the test therefore we can say that the alcohol the alcohol is secondary alcohol and name is two butile alcohol moving forward to so the third part of the question, we have first in that allile alcohol.
04:54
So this will be our allyl alcohol.
04:56
Reaction with hcl in presence of zncl2 forms oh2 positive removal of water molecule as this bond is going to break.
05:08
And here there will be generation of a carbocotin attack of cl minus on the carbocotin.
05:16
This forms this product.
05:20
So basically this is giving a positive lucas test.
05:27
Next we have is n profile alcohol...