Find the pH during the titration of 20.00 mL of 0.1350 M benzoic acid, C6H5COOH (Ka = 6.3 multiplied by 10-5), with 0.1350 M NaOH solution after the following additions of titrant.
(a) 0 mL
(b) 10.00 mL
(c) 15.00 mL
(d) 19.00 mL
(e) 19.95 mL
(f) 20.00 mL
(g) 20.05 mL
(h) 25.00 mL