JAMB - Chemistry (2008 - No. 41)
A red precipitate of copper (I) carbide is formed when ammonium solution of copper (I) chloride is introduced into
CH2 = CH - CH2 - CH3
CH3 CH2 - C ≡ CH
CH3 CH2 CH2 CH3
CH3 - C C - CH3
Explanation
Terminal alkynes react with ammoniacal copper(I)chloride to produce a red precipitate.
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