A sample of 0.100 M HCl is being titrated with 0.100 M NaOH. Calculate the pH when the volume of titrant added is 95%, 100%, and 105% of the equivalence point.
a) pH < 7 for all volumes
b) pH = 7 for all volumes
c) pH > 7 for all volumes
d) pH < 7 for 95%, pH = 7 for 100%, pH > 7 for 105%