1. Acids & Bases & Equilibrium

2. Acid- Base Strength & Dissociation Recall: Strong acids and bases dissociate quantitatively (>99.9%) in water Weak acids and bases dissociate partially in water When a weak acid or base is added to water dynamic equilibrium is established

3. The Acid-Dissociation Constant, K a

4. Determine the K a of propanoic acid (C 2 H 5 COOH (aq) ) given that a 0.10 mol/L solution has a pH of 2.96

5. Determine the pH of a 0.050 mol/L solution of nitrous acid (HNO 2(aq) ). K a = 5.6 X 10 -4

6. The Base-Ionization Constant, K b

7. A 5.0 g/L solution of aniline (C 6 H 5 NH 2(aq) ) has a pH of 8.68. Determine the K b of aniline.

8. Calculate the pH of a 3.6 X 10 -3 mol/L solution of quinine (C 20 H 24 N 2 O 2(aq). K b = 3.3 X 10 -6

9. Practice Problems P. 554 #1, 2 P. 556 #3-5 P. 568-570 #7-10 P. 574 #12, 13

10. Relationship between K a, K b, & K w Worksheet (Benzoic Acid)