Calculate the pH for each of the following cases in the
titration of 25.0 mL of 0.120 M pyridine, C5H5N(aq) with 0.120 M
HBr(aq):
Kb= 1.7x10^-7, so Ka must equal 5.88x10^-24
(a) before addition of any HBr, pH=?
(b) after the addition of 12.5mL of HBr, pH=?
(c) after the addition of 24.0mL of HBr, pH=?
(d) after addition of 25.0mL of HBr, pH=?
(e) after addition of 34.0mL of HBr, pH=?