Write the reactions of aromatic and aliphatic primary amines with nitrous acid.

Explanation

Aromatic primary amines reacts with `HNO_2` at 273-278 to from aromatic diazonium salts.

Aliphatic primary amines also react with HNO.. at 273-278 K to form aliphatic diazonium salts . But these are unstable even at low temperature and thus decomposers readily to form a mixture of compounds consisting of alkyl chlorides , alkenes and alcohols , out of which alcohols generally predominates.
`underset("Ethylamine")(CH_3CH_2NH_2)+NHO_2+HCloverset(-2H_2O)underset(273-278K)rarrunderset(("unstable"))underset("Ethanediazonium chloride")([CH_3CH_2-overset(+)N-=N]Cl^(-))overset(H_2O)rarrunderset("Ethanol")(CH_3CH_2OH)+N_2+HCl`