Identify product B in the following reaction. Aniline [273 ,K] NaNO_2 + HCl A [ ] H_2O B + N_2

MHT CET 2023 Chemistry question

Identify product B in the following reaction. Aniline A B +

(A)Chlorobenzene
(B)Benzyl alcohol
(C)Benzenediazoniumchloride
(D)PhenolCorrect

Answer: (D)

Solution

Step 1: aniline reacts with (nitrous acid) at 273-278 K (diazotisation) to give benzenediazonium chloride, C_6H_5NH_2 + NaNO_2 + 2HCl \rightarrow C_6H_5N_2^+Cl^- + NaCl + 2H_2O; this is A. Step 2: on warming with water the diazonium salt is hydrolysed, the diazonium group is replaced by -OH and

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Question ID VK-097257