Describe a method for the identification of primary, secondary and tertiary amines

Explanation

Hinsberg.s test is used to identify the primary, secondary and tertiary amines.
(a) For primary amines `(1^(@))`
`C_(6)H_(5)-underset(O)underset(||)overset(O)overset(||)S-Cl+R*NH_(2) overset(-HCl)tounderset("(Soluble in alkali, e.g. NaOH)")underset("(N-alkyl benzene sulphonamide)")(C_(6)H_(5)-underset(O)underset(||)overset(O)overset(||)S-underset(H)underset(|)N-R)`
(b) For secondary amines `(2^(@))`
`C_(6)H_(5)-underset(O)underset(||)overset(O)overset(||)S-Cl+R_(2)NH overset(-HCl)tounderset("(Insoluble in alkali)")underset("(Benzenesulphonamide)")(C_(6)H_(5)-underset(O)underset(||)overset(O)overset(||)S-underset(R )underset(|)N-R)`
( c ) For tertiary amines
`C_(6)H_(5)-underset(O)underset(||)overset(O)overset(||)S-Cl+R_(3)*N to ` No reaction