a) Calculate how many mL of 0.100 M NaOH are needed to neutralize completely 29.0 mL of 0.0400 M acetic acid.
b) 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 38.4 mL of NaOH are added?
-What is the pH after 50 mL of NaOH are added?
-What is the pH after 56.5 mL of NaOH are added?
c) Calculate the pH of 0.179 M phosphoric acid (H3PO4, a triprotic acid). Ka1 = 7.5 x 10-3, Ka2 = 6.2 x 10-8, and Ka3 = 4.8 x 10-13.