Calculate the pH during the titration of 100.0 mL of 0.200 M HCl with 0.400 M NaOH. First what is the initial pH (before any NaOH is added)?
What is the pH after 31.9 mL of NaOH are added?
What is the pH after 50 mL of NaOH are added?
What is the pH after 53.4 mL of NaOH are added?