Consider the titration of 50.0 mL of 0.100 M HC3H5O2 by 0.100 M KOH for the following questions (Ka for HC3H5O2 = 1.3 x 10-5). Calculate all pH values to two decimal places. 1) Calculate the pH after 0.0 mL of KOH has been added. _____________ 2) Calculate the pH after 25.0 mL of KOH has been added.