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Clearly explain why HOCl is stronger than HOBr, whereas HCl is weaker than HBr with respect...

Clearly explain why HOCl is stronger than HOBr, whereas HCl is weaker than HBr with respect to acid strength

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Answer #1

In case of oxyacids of halogens, the acid strength is inversely proportional to the atomic number.

With increase in atomic number, electronegativity decreases and size increases. The tendency of halogen to draw electrons from X-O-H bond due to inductive effect decreases from chlorine to bromine. The tendency for the removal of proton from O-H bond also decreases. Hence, the acid strength of HOCl is higher than the acid strength of HOBr.

HBr is stronger acid than HCl

involves heat of dehydration of HX, heat of dissociation of HX, ionisation potential of H, electron affinity of X, heat of hydration of and heat of hydration of

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