13.2     Give one chemical test to distinguish between the following pairs of compounds. 

                (ii) Secondary and tertiary amines

Answers (1)
M manish

Secondary and tertiary amines can be distinguished by reacting them with Hinsberg's reagent which is also called benzenesulphonyl chloride.(C_{6}H_{5}SO_{2}Cl) In the case of primary amine the product is soluble in alkali but not in secondary amine case. And tertiary amine does not react with this reagent.

In the case of a secondary amine

 

Tertiary amine + benzenesulphonyl chloride  \rightarrow no reaction

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