In the presence of peroxide,hydrogen chloride | vedclass

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(C) The anti-Markovnikov addition of $HX$ to alkenes proceeds via a free radical mechanism.For $HCl$,the bond dissociation energy is very high,making

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One of the steps is endothermic in both the cases

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(C) The anti-Markovnikov addition of $HX$ to alkenes proceeds via a free radical mechanism.For $HCl$,the bond dissociation energy is very high,making the homolytic cleavage of the $H-Cl$ bond endothermic.For $HI$,the addition of the iodine radical to the alkene is an endothermic step.Since one of the propagation steps is endothermic for both $HCl$ and $HI$,the overall reaction does not proceed via the anti-Markovnikov pathway in the presence of peroxide.

In the presence of peroxide,hydrogen chloride and hydrogen iodide do not give anti-Markovnikov's addition to alkenes because

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