Consider the curve shown here for the titration of a weak monoprotic acid with a strong base and answer each question.

a. What is the pH and what is the volume of added base at the equivalence point?

b. At what volume of added base is the pH calculated by working an equilibrium problem based on the initial concentration and Ka of the weak acid?

c. At what volume of added base does pH = pK_a?

d. At what volume of added base is the pH calculated by working an equilibrium problem based on the concentration and K_b of the conjugate base?

e. Beyond what volume of added base is the pH calculated by focusing on the amount of excess strong base added?

Transcribed Image Text:

Hd 14 12- 10 26420 8- 2- 20 40 60 80 Volume of base added (ml.) 0