Chapter 9, Problem 101P

Calculate the pH of an acetic acid/acetate buffer in which the concentration of acetic acid is always 0.20 M, but the concentration of sodium acetate $\left({\text{NaCH}}_{\text{3}}\text{COO}\right)$ corresponds to each of the following values: $\left(\text{a}\right)\text{ 0}\text{.20 M; }\left(\text{b}\right)\text{ 0}\text{.40 M; }\left(\text{c}\right)\text{ 0}\text{.10 M}\text{.}$