Write the reaction equations: chloroethane = ethanol = ethanal.

Chloroethane reacts with potassium hydroxide to form ethanol and potassium chloride.

C2H5Cl + KOH = C2H5OH + KCl

Alcohols are oxidized to aldehydes.

Ethanol is oxidized to ethanal.

C2H5OH [O] CH3 – COH + H2O

Ethanal is oxidized by an ammoniacal solution of silver oxide (“silver mirror” reaction) to acetic (ethanic) acid. Silver precipitates.

CH3 –COH + Ag2O = CH3 – COOH + 2Ag ↓.



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