Match the compounds, Ethanol, Methane, Ethanoic acid, Ethyne, and Ethene with the description given below:
It gives a red precipitate with an ammonical solution of Copper (I) chloride.

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Solution

The saturated and unsaturated hydrocarbons are distinguished by the ammoniacal solution of the Copper (I) chloride $(CuCl)$ chemical test.
Ethane $(C_{2} H_{6})$ and Ethene $(C_{2} H_{4})$ do not give any color with an ammoniacal solution of Copper (I) chloride.
Terminal alkynes react with an ammoniacal solution of Copper (I) chloride giving the red precipitate.
Ethyne $(C_{2} H_{2})$ gives a red precipitate with an ammoniacal solution of Copper (I) chloride.
The chemical equation of the reaction of Ethyne with ammoniacal solution of Copper (I) chloride is written as:
$HC \equiv CH \overset{{Cu}_{2} {Cl}_{2} + {NH}_{3}}{\to} Cu - C \equiv C - Cu + {NH}_{4} Cl (Ethyne) (red precipitate) (Ammmonium chloride)$

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Match the compounds, Ethanol, Methane, Ethanoic acid, Ethyne, and Ethene with the description given below: It gives a red precipitate with an ammonical solution of Copper (I) chloride.

Match the compounds, Ethanol, Methane, Ethanoic acid, Ethyne, and Ethene with the description given below:
It gives a red precipitate with an ammonical solution of Copper (I) chloride.