A buffer solution contains 0.20 M acetic acid and 0.20 M sodium acetate
CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases
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 Ka for acetic acid is 1.8×10−5.)
(a) 4.82
(b) 4.70
(c) 4.26
(d) 4.74