How many millimoles of acetate need to add to solution

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Question- You need to produce a buffer solution that has a pH of 5.03. You already have a solution that contains 10. mmol of acetic acid.

How many millimoles of acetate will you need to add to this solution. The pKa of acetic acid is 4.74. Express your answer in millimoles.

I tried 19.5 although it was not correct.

I require skilled aid to answer the given problem

Reference no: EM13715859

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