Determine the pH of an aqueous solution of benzoic acid, C₆H₅COOH, of concentration 0.064 mol dm^-3. The pK_a of benzoic acid is 4.19.

Name: Determine the pH of an aqueous solution of benzoic acid, C 6 H 5 COOH, of concentration 0.064 mol dm -3 . The pK a of benzoic acid is 4.19.
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Question

Quizplus · Accepted Answer

The pH of a weak acid solution can be calculated using the formula: pH = 0.5 * (pKa - log C), where C is the concentration of the acid. Substituting the given values: pH = 0.5 * (4.19 - log 0.064) ≈ 2.69.

Determine the PH of an Aqueous Solution of Benzoic Acid