Question
Chemistry Question on reaction mechanism
Peroxide effect is observed with the addition of HBr but not with the addition of HI to unsymmetrical alkene because
A
H-I bond is stronger that H-Br and is not cleaved by the free radical
B
H-I bond is weaker than H-Br bond so that iodine free radicals combine to form iodine molecules
C
Bond strength of HI and HBr are same but free radicals are formed in HBr
D
All of these
Answer
H-I bond is weaker than H-Br bond so that iodine free radicals combine to form iodine molecules
Explanation
Solution
The correct answer is (B) : H-I bond is weaker than H-Br bond so that iodine free radicals combine to form iodine molecules.