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A red precipitate of copper (I) carbide is formed when ammonium solution of copper (I)...

Chemistry
JAMB 2002

A red precipitate of copper (I) carbide is formed when ammonium solution of copper (I) chloride is introduced into

  • A. CH3CH2CH2CH3
  • B. CH2 = CH - CH2CH3
  • C. HC≡CH
  • D. CH3 - C = C - CH3
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Correct Answer: Option C
Explanation

When ethyne is passed through an ammoniacal solution of copper(I) chloride, a red-brown precipitate of copper(I) acetylide is produced. Terminal alkynes also react to form a red-brown precipitate

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