What is the ph of a solution of benzoic acid

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Question- What is the pH of a solution when 50 ml of 0.2 M Benzoic Acid (pKa=4.19) is titrated with 10 ml of 0.5 M NaOH? a. 2.63 b. 4.19 c. 5.68 d. 8.32

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