Question 1
What is the pH of a solution made by mixing 30.00 mL of 0.10 mol L
-1 aqueous acetic acid (CH
3COOH) with 50.00 mL of 0.100 mol L
-1 KOH(aq)? Assume that the volumes of the solutions are additive.
Ka = 1.8 × 10
-5 for

◦ 8.26
◦ 9.26
◦ 11.13
◦ 12.40
Question 2
What is the pH of a solution prepared by mixing equal volumes of 0.10 M aqueous hydrochloric and 0.1 M aqueous hydrofluoric acid? (
Ka for HF is 6.6 × 10
-4)
◦ 1.0
◦ 1.3
◦ 1.6
◦ 2.2
◦ 5.0