The peroxide effect does not occur with HCl because:
AHCl does not add to alkenes
BChlorine radicals form Cl2
CHCl is a weak acid
DThe H-Cl bond is too strong
Answer & Solution
Correct answer: D. The H-Cl bond is too strong
The strong H-Cl bond is not cleaved by the free radical, so the chain cannot start.
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