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A buffer solution is prepared by mixing 20.0mL of 0.032M benzoic acid C6H5COOH soultion with 25.0mL...

A buffer solution is prepared by mixing 20.0mL of 0.032M benzoic acid C6H5COOH soultion with 25.0mL of 0.022 M NaC6H5COO. what is the pH of the buffer produced? (Ka of benzoic acid = 6.2*10^-5)

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