a. What is the pH of the buffer prepared by mixing 250. mL of0.200 M benzoic acid and 100. mL of 0.250M NaOH? pKa=4.19
b. A buffer containing 1.00 M concentrations of HOAc and NaOAchas a pH of 4.742. (a) What is the pH of the soln’ after 0.0100 molof HCl has been added to 1.00 L of the buffer? (b) What is the pHof the soln’ after the addition of 0.0100 mol of NaOH? (c) What isthe buffer capacity and pH change for each soln’ [ in (a) and(b)]?
