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What is the correct order of reactivity of the following haloacids with a given alcohol?

(a) HCl > HBr > HI

(b) HI > HBr > HCl

(c) HBr > HCl > HI

(d) HI > HCl > HBr

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My query is from Methods of Preparation of Haloalkanes topic in section Haloalkanes and Haloarenes of Chemistry – Class 12

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The correct answer is (b) HI > HBr > HCl

To explain: The bond dissociation enthalpy of the carbon-halogen bond between H and Cl is the highest and that between H and I is the lowest among HI, HBr and HCl.

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