A buffer is to be prepared by adding solid sodium acetate to 0.10 M CH₃COOH. Which of the following concentrations of sodium acetate will produce the most effective buffer? A)3.0 M CH ₃COONa B)2.5 M CH ₃COONa C)2.0 M CH ₃COONa D)1.5 M CH ₃COONa E)0.30 M CH ₃COONa

Question

Quizplus · Accepted Answer

The most effective buffer is formed when the concentrations of the weak acid and its conjugate base are equal or nearly equal. Since the acetic acid concentration is 0.10 M, the closest concentration of sodium acetate is 0.30 M.

A Buffer Is to Be Prepared by Adding Solid Sodium