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You need to prepare an acetate buffer of pH 5.31 from a 0.809 M acetic acid...

You need to prepare an acetate buffer of pH 5.31 from a 0.809 M acetic acid solution and a 2.81 M KOH solution. If you have 880 mL of the acetic acid solution, how many milliliters of the KOH solution do you need to add to make a buffer of pH 5.31 ? The p K a of acetic acid is 4.76.

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