Buffer Solutions with the Component Concentrations Shown Below Were Prepared

Multiple Choice

Buffer solutions with the component concentrations shown below were prepared. Which of them should have the lowest pH?

A) [CH₃COOH] = 0.25 M, [CH₃COO⁻] = 0.25 M
B) [CH ₃COOH] = 0.75 M, [CH ₃COO ⁻] = 0.75 M
C) [CH ₃COOH] = 0.75 M, [CH ₃COO ⁻] = 0.25 M
D) [CH ₃COOH] = 0.25 M, [CH ₃COO ⁻] = 0.75 M
E) [CH ₃COOH] = 1.00 M, [CH ₃COO ⁻] = 1.00 M