College Chemistry: Eizenga

A titration is performed on 25.0mL of 0.175M CH₃NH₂ using 0.150M HBr as the titrant.

What is the pH at the following points:
a) initially (no titrant added)
b) after 5.00mL of acid added
c) at the equivalence point
d) after 34.2mL of HBr is added