Write preparation of (a) diethyl ether (b) ethyl cyanide from ethyl bromide.

Q.10 Write preparation of (a) diethyl ether (b) ethyl cyanide from ethyl bromide.

Doubtly Asked 29 Oct 2026 Board exam · March 2024 hsc 12th Save WhatsApp Report

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(a) Diethyl ether (Williamson synthesis): ethyl bromide is heated with sodium ethoxide.

C₂H₅Br + C₂H₅ONa → (Δ) C₂H₅–O–C₂H₅ + NaBr

(b) Ethyl cyanide: ethyl bromide is boiled with alcoholic potassium cyanide.

C₂H₅Br + KCN → (alc., Δ) C₂H₅–C≡N + KBr

Doubtly AI · 29 Oct 2026 AI-generated · not yet verified Report

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