Chapter 9.10, Problem 9.21PP

Calculate the pH of a dihydrogen phosphate/hydrogen phosphate buffer prepared with each ofthe following concentrations. What do you conclude about the pH of a buffer when equal concentrations of the weak acid and conjugate base are used to prepare it?
a. $\text{0}{\text{.10 M NaH}}_{\text{2}}{\text{PO}}_{\text{4}}\text{ and 0}{\text{.10 M Na}}_{\text{2}}{\text{HPO}}_{\text{4}}$
b. $\text{1}{\text{.0 M NaH}}_{\text{2}}{\text{PO}}_{\text{4}}\text{ and 1}{\text{.0 M Na}}_{\text{2}}{\text{HPO}}_{\text{4}}$
c. $\text{0}{\text{.50 M NaH}}_{\text{2}}{\text{PO}}_{\text{4}}\text{ and 0}{\text{.50 M Na}}_2{\text{HPO}}_{\text{4}}$
More Practice: Try Problems 9.99-9.102.