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The pH of a 0.53 M solution of pentanoic acid (HC,H,O) is measured to be 2.56. Calculate the acid dissociation constant K of pentanoic

The pH of a 0.53 M solution of pentanoic acid (HC,H,O) is measured to be 2.56. Calculate the acid dissociation constant K of pentanoic acid. Round your answer to 2 significant digits.

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