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A buffer with a pH of 3.90 contains 0.15 M of sodium benzoate and 0.30 M...

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Chemistry

A buffer with a pH of 3.90 contains 0.15 M of sodium benzoateand 0.30 M of benzoic acid. What is the concentration of [H ] inthe solution after the addition of 0.050 mol of HCl to a finalvolume of 1.4 L?

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