Q. 71

Assertion : N, N-Diethylbenzene sulphonamide is insoluble in alkali.

Reason : Sulphonyl group attached to nitrogen atom is strong electron withdrawing group.

Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

A. Both assertion and reason are wrong.

B. Both assertion and reason are correct statements but reason is not correct explanation of assertion.

C. Assertion is correct statement but reason is wrong statement.

D. Both assertion and reason are correct statements and reason is correct explanation of assertion.

E. Assertion is wrong statement but reason is correct statement.

Answer :

Hinsberg reagent/benzenesulphonyl chloride on reaction with secondary amine N,N-diethylbenzenesulphonamide. This compound is insoluble in alkali as it does not contain any reactive acidic hydrogen attached to the nitrogen atom.

The sulphonyl group attached to nitrogen atom is a strong electron withdrawing group but that is not the reason for insolubility of the sulphonamide, the absence of acidic hydrogen.


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