Question

Which is more acidic whether hocl or hoi?

Answer 1

HOI is a weaker acid thanHOCl because the O–H bond in HOI is stronger than the O–H bond in HOCl.

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Answer 2

Chlorine is more electronegative than iodine due to which it withdraws electrons from oxygen more effectively than iodine which in turn attracts electrons from O-H bond as a result of which the O-H bond in HOCl becomes weak.So, HOCl can ionize more easily than HOI and thus HOCl is more acidic than HOI.
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