JEE Main Chemistry question
Which of the following acid reacts to reverse the Markownikoff's rule? [AIEEE-pattern]
Answer: (B)
Solution
The peroxide (anti-Markovnikov, Kharasch) effect — a free-radical chain mechanism that reverses the usual ionic regiochemistry — operates uniquely for HBr. This is because the Br–H bond dissociation energy and the exothermicity of each propagation step (Br addition to the alkene, then
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