Question

Benzene diazonium chloride on reaction with phenol in weakly basic medium gives?

• A. Diphenyl ether
• B. p-Hydroxy azobenzene
• C. Chlorobenzene
• D. Benzene

Answer 1

The correct option is B

p-Hydroxy azobenzene

Explanation of the correct answer:

The correct answer is option B:

1. The chemical formula for benzodiazonium chloride is ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{ClN}}_2$.
2. Chloride and a diazonium cation are combined to form benzene diazonium chloride.
3. The solid form of benzene diazonium chloride is colorless, and polar solvents like water can dissolve it.
4. It serves as the aryl diazonium compounds' parent member.
5. In a mildly basic solution, benzene diazonium chloride reacts with phenol to produce p-hydroxy azobenzene.

Explanation of the incorrect answers:

Options A, C, and D:

1. Benzene diazonium chloride on reaction with phenol in a weakly basic medium gives p-Hydroxy azobenzene.
2. Thus, these options are incorrect.

Hence, option B is correct, i.e., p-Hydroxy azobenzene.