Question -
Answer -
(i) Aromaticamines react with nitrous acid (prepared in situ from NaNO2 anda mineral acid such as HCl) at 273 − 278 K to form stable aromatic diazoniumsalts i.e., NaCl and H2O.
(ii) Aliphaticprimary amines react with nitrous acid (prepared in situ from NaNO2 anda mineral acid such as HCl) to form unstable aliphatic diazonium salts, whichfurther produce alcohol and HCl with the evolution of N2 gas.