Question

Aniline reacts with $NaN{O}_2$ and $HCl$ at room temperature to give

• A. nitroaniline
• B. phenol
• C. chloroaniline
• D. diazonium chloride

Answer 1

Answer: (B)

At room temperature, initially formed diazonium chloride decomposes to give phenol.
$C_6{H}_{5}N{H}_2\underset{\text{room temp.}}{\overset{NaN{O}_2/HCl}{\to }}\underset{\text{benzene diazonium chloride}}{[C_6{H}_5-N^{+}\equiv NC{l}^{-}]}$ $\underset{HCl,-N_2}{\overset{H_{2}O}{\to }}\underset{\text{phenol}}{C_6{H}_{5}OH}$