Chemistry - Hydrocarbon Question with Solution | TestHub

Ammoniacal$\mathrm{C}{\mathrm{u}}_2\mathrm{C}{\mathrm{l}}_2$reacts with terminal alkynes to give red precipitate while other alkynes do not react with it.
$\text{R}-\text{C}\equiv \text{CH}\underset{{\text{Cu}}_{\text{2}}{\text{Cl}}_{\text{2}}}{\overset{\text{ammonical}}{\to }}\underset{\text{red ppt}\text{.}}{\text{R}-\text{C}\equiv \stackrel{-}{\text{C}}\stackrel{+}{\text{Cu}}}$