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Question 820006
JEE Chemistry · Medium

Amines: Reaction with HNO₂ MCQ

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Reaction with HNO₂MediumQuestion 820006

Question

Primary aliphatic amines react with HNO₂ (NaNO₂ + HCl) to give:
  1. A
    Unstable diazonium salt → N₂ + alcohol
    Correct
  2. B
    Stable diazonium salt
  3. C
    Amide
  4. D
    Secondary amine

Correct answer

Unstable diazonium salt → N₂ + alcohol

Explanation

1° aliphatic amines + HNO₂ → alkyl diazonium salt (R−N₂⁺) which is unstable and immediately decomposes: evolves N₂ gas + carbocation → alcohol + alkene (various products). Unlike aryl diazonium salts which are stable at 0°C.

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