Identify the reagent from the following list which can easily distinguish between 1-butyne and 2-butyne.

Question

Identify the reagent from the following list which can easily distinguish between 1-butyne and 2-butyne. (A) Bromine water (B) Baeyer's reagent (C) Dilute H2SO4+HgSO4 (D) Ammoniacal Cu2Cl2

Tardigrade Admin · Accepted Answer

Ammoniacal Cu2Cl2 reacts with terminal alkynes to give red precipitate while other alkynes do not react with it. textR - textC ≡ textCH arrow textCu text2 textCl text2 textammonical underset textred ppt text. textR - textC ≡ overset- textC overset+ textCu

Q. Identify the reagent from the following list which can easily distinguish between 1-butyne and 2-butyne.

Bromine water

Baeyer's reagent

Dilute $H_{2} S O_{4} + H g S O_{4}$

Ammoniacal $C u_{2} C l_{2}$

Ammoniacal $C u_{2} C l_{2}$ reacts with terminal alkynes to give red precipitate while other alkynes do not react with it.
$R - C \equiv CH \to_{Cu_{2} Cl_{2}}^{ammonical} red ppt . R - C \equiv C - Cu +$

Q. Identify the reagent from the following list which can easily distinguish between 1-butyne and 2-butyne.

Bromine water

Baeyer's reagent

Dilute H2​SO4​+HgSO4​

Ammoniacal Cu2​Cl2​

Ammoniacal Cu2​Cl2​ reacts with terminal alkynes to give red precipitate while other alkynes do not react with it. R−C≡CH→Cu2​Cl2​ammonical​red ppt.R−C≡C−Cu+​

Dilute $H_{2} S O_{4} + H g S O_{4}$

Ammoniacal $C u_{2} C l_{2}$

Ammoniacal $C u_{2} C l_{2}$ reacts with terminal alkynes to give red precipitate while other alkynes do not react with it.
$R - C \equiv CH \to_{Cu_{2} Cl_{2}}^{ammonical} red ppt . R - C \equiv C - Cu +$