Question 6 • Crowley Original Credit Chemistry B
A higher pKa means a weaker acid. Benzoic acid has a pKa of about 4.2; acetic acid is about 4.8 and hypochlorous acid is about 7.5, so both are weaker than benzoic acid. Hydrofluoric acid has a pKa of about 3.2, making it stronger, not weaker.
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