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The pH of a solution made of 0.1 M acetic acid and 0.1 M potassium acetate...

The pH of a solution made of 0.1 M acetic acid and 0.1 M potassium acetate is (Ka = 1.8 x 10-5) to which 0.001 mol of KOH has been added:

a) pH = 8.92

b) pH = 11.55

c) pH = 4.73

d) pH = 4.74

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