Comparing the basic strength of NH_3, CH_3NH_2 and C_6H_5NH_2, it may be concluded that [AMU 2009]

JEE Main Chemistry question

Comparing the basic strength of , and , it may be concluded that [AMU 2009]

(A)Basic strength remains unaffected
(B)Basic strength of alkyl amines is lowest
(C)Basic strength of aryl amines is lowestCorrect
(D)Basic strength of is highest

Answer: (C)

Solution

Alkyl substitution on nitrogen (as in ) donates electron density by the effect, making methylamine more basic than ammonia. Attaching nitrogen directly to an aromatic ring (as in ), however, allows the lone pair to

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Question ID VK-150280