The correct order of reactivity of hydrogen h | vedclass

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(C) The reaction of propene with hydrogen halides $(HX)$ is an electrophilic addition reaction.In this reaction,the rate-determining step involves the

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$HI > HBr > HCl$

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(C) The reaction of propene with hydrogen halides $(HX)$ is an electrophilic addition reaction.In this reaction,the rate-determining step involves the protonation of the alkene by the hydrogen halide.The reactivity of hydrogen halides depends on the strength of the $H-X$ bond.The bond dissociation energy decreases in the order $HCl > HBr > HI$.Therefore,$HI$ is the most reactive because it has the weakest $H-X$ bond,making it the easiest to break to provide a proton $(H^+)$.The correct order of reactivity is $HI > HBr > HCl$.

The correct order of reactivity of hydrogen halides with propene is

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