What molar ratio of CH3COOH to CH3COONa should be used in order to prepare an acetic acid / sodium acetate buffer solution with a pH of 4.00 ± 0.02? [Ka(CH3COOH) = 1.8 × 10-5]
A) 0.18
B) 0.84
C) 1.2
D) 5.6
E) 0.10
Correct Answer:
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