Haloalkanes And Haloarenes Question 1

Question 1 - 2024 (01 Feb Shift 1)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Haloalkanes react with $KCN$ to form alkyl cyanides as a main product while with $AgCN$ form isocyanide as the main product.

Reason (R): $KCN$ and $AgCN$ both are highly ionic compounds.

In the light of the above statement, choose the most appropriate answer from the options given below:

(1) (A) is correct but (R) is not correct

(2) Both (A) and (R) are correct but (R) is not the correct explanation of (A)

(3) (A) is not correct but (R) is correct

(4) Both (A) and (R) are correct and (R) is the correct explanation of (A)

Show Answer

Answer (1)

Solution

Formula: Reaction with KCN and AgCN

(i)

(ii) $\underset{\text { (Covalent) }}{AgCN}+R \underset{\text { (Major product) }}{X}$

$AgCN$ is mainly covalent in nature and nitrogen is available for attack, so alkyl isocyanide is formed as main product.