Describe a method for the identification of primary,secondary and tertiary amines. Also write chemical equations of the reactions involved.

(N/A) Primary,secondary and tertiary amines can be identified and distinguished by Hinsberg's test. In this test,the amines are allowed to react with Hinsberg's reagent,benzenesulphonyl chloride $(C_6H_5SO_2Cl)$. The three types of amines react differently with Hinsberg's reagent.
$1$. Primary amines $(R-NH_2)$ react with benzenesulphonyl chloride to form $N$-alkylbenzenesulphonamide,which is soluble in alkali due to the acidic hydrogen atom attached to the nitrogen atom.
Reaction: $C_6H_5SO_2Cl + R-NH_2 \rightarrow C_6H_5SO_2NHR + HCl$
$2$. Secondary amines $(R_2NH)$ react with Hinsberg's reagent to give $N,N$-dialkylbenzenesulphonamide,which is insoluble in alkali because there is no hydrogen atom attached to the nitrogen atom.
Reaction: $C_6H_5SO_2Cl + R_2NH \rightarrow C_6H_5SO_2NR_2 + HCl$
$3$. Tertiary amines $(R_3N)$ do not react with Hinsberg's reagent at all because they lack a hydrogen atom on the nitrogen atom to form a sulphonamide.