Question

Identify the reagent from the following list which can easily
distinguish between 1-butyne and 2-butyne
(a) bromine, CCl₄
(b) H₂, Lindlar catalyst
(c) dilute H₂SO₄, HgSO₄
(d) ammonical Cu₂Cl₂ solution

Answer 1

Answer:

(d) ammonical Cu₂Cl₂ solution

Hope this will help you.

If so please mark me brainliest.

Answer 2

Reagent from the above list which can easily distinguish between 1-butyne and 2-butyne is :

• We have two compounds with same number of carbon in their parent chain.

• The difference is the position of triple bond in both of them.

• One is having triple bond at terminal carbon and other is having it in between the compound.

• So for distinguishing terminal alkyne group, we use ammonical Cu₂Cl₂ solution.

• When 1-butyne react with ammonical Cu₂Cl₂ solution, it gives red ppt of copper-1-butynide.

• Hence correct option is (d)