Aniline can be converted into phenol via a stable intermediate diazonium salt. Which of the followin — Alcohols Phenols and Ethers Chemistry Question

💡 Solution & Explanation

A diazonium salt is formed by treating an aromatic primary amine (aniline) with nitrous acid ($HNO_2$, generated in situ from $NaNO_2 + HCl$) strictly at ice-cold temperatures ($273-278\text{ K}$ or $0-5^\circ\text{C}$). Higher temperatures cause premature decomposition. The salt is then warmed with water to yield phenol.