10. Acid-Base Titrations

What is the pH at the equivalence point in the titration of 100 mL of 0.10 M HCl with 0.10 M NaOH?

During the titration of 25.0 mL of 0.100 M HCl with 0.100 M NaOH, what is the pH after adding 15.0 mL of NaOH?