Paper 3 · acid strength

Which of the following is the weakest acid in aqueous solution?

AHF

BHCl

CHBr

DHI

Explanation: The marking scheme gives answer A. HF is the weakest acid among the hydrogen halides because the H-F bond is the strongest (shortest bond length, highest bond energy), making it less easy to dissociate.

ZIMSEC Chemistry Paper 3, November 2009, Q10

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Which of the following is the weakest acid in aqueous solution?

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