Which reagent can be used to distinguish betw | vedclass

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(D) $1$-butyne $(CH_3-CH_2-C \equiv CH)$ is a terminal alkyne containing an acidic hydrogen atom attached to the $sp$-hybridized carbon.Terminal alkyn

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Ammoniacal $Cu_2Cl_2$ solution

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(D) $1$-butyne $(CH_3-CH_2-C \equiv CH)$ is a terminal alkyne containing an acidic hydrogen atom attached to the $sp$-hybridized carbon.Terminal alkynes react with ammoniacal cuprous chloride $(Cu_2Cl_2)$ to form a red precipitate of copper$(I)$ acetylide.$2$-butyne $(CH_3-C \equiv C-CH_3)$ is a non-terminal alkyne and does not have an acidic hydrogen atom.Therefore,it does not react with ammoniacal $Cu_2Cl_2$ solution.Thus,ammoniacal $Cu_2Cl_2$ is used to distinguish between them.

Which reagent can be used to distinguish between $1$-butyne and $2$-butyne?

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