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In the reaction of HBr and Styrene, how come the major product formed is (1-bromoethyl) benzene...

In the reaction of HBr and Styrene, how come the major product formed is (1-bromoethyl) benzene and the minor product is phenylethyl bromide? What causes one to be a major product over the other?

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TH CH3 HBr styrene major product minor product Mechanism: 11 Secondary primary Carbocahon Resonance carbocation Br - CH₂ Seco

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