What type of reaction mechanism accounts for the reaction of an alkyne with HBr to give an alkyl bromide?

Question

Quizplus · Accepted Answer

The reaction of an alkyne with HBr follows electrophilic addition mechanism where the pi bond of the alkyne acts as the nucleophile to attack the electrophilic hydrogen of HBr forming a carbocation intermediate. The intermediate then undergoes halide ion attack from the bromide ion to form the alkyl bromide product.

What Type of Reaction Mechanism Accounts for the Reaction of an Alkyne