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buffer with a pH of 4.14 contains 0.35 M of sodium benzoate and 0.40 M of...

buffer with a pH of 4.14 contains 0.35 M of sodium benzoate and 0.40 M of benzoic acid. What is the concentration of [H+] in the solution after the addition of 0.054 mol of HCl to a final volume of 1.6 L? Assume that any contribution of HCl to the volume is negligible.

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