Question

4. You make up two solutions at the same concentration, each containing a weak acid, and then measure the pH of the solution. The results are as follows:

Acid Concentration / mol dm-3 pH
Hypochlorous acid, HClO 0.10 4.22
Hypobromous acid, HBrO 0.10 4.84

(a) Explain which is the stronger acid.

(b) For hypobromous acid, calculate the Ka and pKa. State any approximations you use in the calculation.

Answer 1

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