Question

Consider the following chemical equations:

1. (a) Identify ‘A’ and ‘B’.

2. (b) Name the reactions.

3. (c) Give any one method to prepare beznene diazonium chloride.

Answer 1

1. A – LiAIH₄ B – Br₂ /KOH 

2. (i) is reduction of acid amide. 

(ii) is Homann’s bromamide degradation reaction.

3. Benzene diazonium chloride can be prepared by diazotization of aniline. It can be done by treating aniline with sodium nitrite and HCI at 273-278 K.