JEE Main Chemistry question

The decreasing order of basic character of the three amines and ammonia is [MHT-CET 2006]

(A)NH_3 > CH_3NH_2 > C_2H_5NH_2 > C_6H_5NH_2
(B)C_2H_5NH_2 > CH_3NH_2 > NH_3 > C_6H_5NH_2Correct
(C)C_6H_5NH_2 > C_2H_5NH_2 > CH_3NH_2 > NH_3
(D)CH_3NH_2 > C_2H_5NH_2 > C_6H_5NH_2 > NH_3

Answer: (B)

Solution

Alkyl groups donate electron density to nitrogen by the effect, so alkylamines are more basic than ammonia, and a slightly longer/more branched alkyl chain ( vs ) donates marginally more electron density, making ethylamine a shade more basic than

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Question ID VK-150309