Question Detail

CHM 102 Alkenes: Structure, Bonding, and Geometrical Isomerism Objective Question

Question

What is the first step in the mechanism of hydrohalogenation (HX addition) of an alkene?
Options
A Nucleophilic attack by the alkene
B Protonation of the alkene to form a carbocation
Correct Answer
C Halide attack on the alkene
D Radical initiation
Correct Answer

Option B is the correct answer.

Detailed Explanation

The electrophilic H+ from HX adds to the alkene to form the more stable carbocation intermediate, followed by nucleophilic attack by the halide.

Hint

Electrophilic addition mechanism.

Question Info