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A buffer is prepared by dissolving 25.0 g of sodium acetate (NaC2H3O2), in 1.20 L of a solution of 0.560 M acetic acid (HC2H3O2). Assume that the volume remains the same after dissolving the NaC2H3O2. [pKa of acetic acid is 1.8x10^-5 and Kb of the acetate ion is 5.6x10^-10]

Calculate the pH of the buffer after 5.0 g of KOH is added.

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