What is the action of following reagents on ethyl amine? (Indicate by reaction)(a) Nitrous acid(b) Chloroform and KOH

Q.7

What is the action of following reagents on ethyl amine? (Indicate by reaction)

(a) Nitrous acid

(b) Chloroform and KOH

Doubtly Asked 28 Oct 2026 Board exam · June 2026 hsc 12th Save WhatsApp Report

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Answer:

(a) Nitrous acid (NaNO₂ + HCl, cold): the primary amine gives ethyl alcohol with evolution of nitrogen gas:

C₂H₅NH₂ + HONO → C₂H₅OH + N₂↑ + H₂O

(b) Chloroform and alcoholic KOH (carbylamine reaction): ethyl isocyanide (ethyl carbylamine) with an offensive smell is formed:

C₂H₅NH₂ + CHCl₃ + 3KOH \(\xrightarrow{\Delta}\) C₂H₅–N≡C + 3KCl + 3H₂O

Doubtly AI · 28 Oct 2026 AI-verified · Oct 2026 Report

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