Question: If 0.20 mol/L CH3COOH and 0.50 mol/L CH3COO– together make a buffer solution, calculate the pH of the solution if the acid dissociation constant of CH3COOH is 1.8 × 10-5.
Options
A : 2.09
B : 5.14
C : 2.65
D : 3.98
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