1) What is the pH of a buffer solution that is 0.328 M in lactic acid and 0.255 M in sodium lactate? The Ka of lactic acid is 1.4 × 10^-4.
2) What is the pH of a solution prepared by mixing 50.00 mL of 0.15 M CH3CO2H with 50.00 mL of 0.100 M CH3CO2Na? Assume that the volume of the solutions is additive and that Ka = 1.8 × 10^-5 for CH3CO2H.
3) What is the pH of a buffer solution that is 0.085 M hypochlorous acid (HClO) and 0.195 M in sodium hypochlorite? The Ka of hypochlorous acid is 2.9 × 10^-8.
