Chemistry

Problem

A buffer solution contains 0.20 M acetic acid and 0.20 M sodium acetate. If 1.0 mL of 1.0 M HCl is added to 100 mL of this buffer, what is the new pH? (Assume complete mixing and that

K_a

for acetic acid is

1.8\times10^{-5}

.) a) 4.82 b) 4.70 c) 4.26 d) 4.74

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