NEET 2010 Chemistry question

Which of the following statements about primary amines is 'False'?

(1)Alkyl amines are stronger bases than aryl amines
(2)Alkyl amines react with nitrous acid to produce alcohols
(3)Aryl amines react with nitrous acid to produce phenolsCorrect
(4)Alkyl amines are stronger bases than ammonia

Answer: (3)

Solution

(1) True: in aryl amines the lone pair on N is delocalised into the ring, making them weaker bases than alkyl amines. (2) True: aliphatic primary amines react with to give unstable diazonium salts that decompose to alcohols: $R-NH_2 + HNO_2 → R-OH + N_2 +

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Question ID VK-090531