a) Of a buffer solution consisting of 0.85 M HA and 0.65 M NaA. [5 pts] K, ofHA = 7.8 x 105 b) After adding 0.025 mol of solid NaOH

to 550 mL of the buffer solution in e) After adding 0.015 mol of HCl to 400 mL of the buffer solution in (a).