Consider 50.00 mL of 0.100 M lactic acid (Ka = 1.4 × 10-4) that is titrated with 0.100 M NaOH.
a. What is the pH at the midpoint (also called half-way point) of the titration?
b. What is the pH at the equivalence point?
c. What is the pH after addition of 65.00 mL of NaOH?