Chapter 10, Problem 61P

Interpretation Introduction

Interpretation: The reason as to why the addition of $\text{HBr}$ to alkenes A and C forms the addition products B and D is to be stated.

Concept introduction: According to Markovinokov’s rule, the positive part of halogen acid attached to that carbon atom in $\text{C=C}$ bond which carries maximum number of hydrogen atoms and the negative part of halogen acid will attach to that carbon atom in $\text{C=C}$ bond which has minimum number of hydrogen atoms.

The steps followed by electrophilic addition reaction are stated below:

• First protonation of the alkene take place to generate the carbocation.

• The halide ion will attack on the carbocation to give the final product.