1. Unit 7 Chapter 16 and 17

2. Review of Acids and Bases

3. Conjugate Acid-Base Pairs

4. The Autoionization of Water

5. The pH Scale

6. Strong Acids and Bases

7. Weak Acids

8. Calculating K a from pH

9. Using K a to calculate pH

10. Polyprotic Acids

11. Weak Bases

12. Using K b to Calculate [OH-]

13. The Relationship Between K a and K b

14. Acid-Base Properties of Salts

15. Using pH to Determine the Concentration of a Salt

16. Acid-Base Behavior and Chemical Structure

17. Lewis Acids and Bases

18. Additional Aspects of Aqueous Chapter 17

19. The Common Ion Effect

20. Buffer Solutions

21. Calculating the pH of a Buffer

22. Adding Strong Acids or Bases to Buffers

23. Acid Base-Titrations

24. Effect of K a on titration curves

25. Solubility Equilibria

26. Factors that Affect Solubility

27. Precipitation

28. A solution contains 0.2 M Ba 2+ and 0.2 M Ca 2+. Which of the following CrO 4 2- concentrations will precipitate as much Ba 2+ as possible with out precipitating any CaCrO 4 ?(The K sp of BaCrO 4 = 1 x 10 -10 and the K sp of CaCrO 4 = 7 x 10 -4 ) (A) 3.5 x 10 -3 M (B) 7 x 10 -4 M (C) 1.5 x 10 -7 M (D) 5 x 10 -10 M (E) 7 x 10 -14 M

29. (A) NH 3 and CH 3 COOH (B) KOH and NH 3 (C) HCl and KCl (D) H 3 PO 4 and KH 2 PO 4 (E) NH 3 and NH 4 Cl 18.) The solution with the highest pH 19.) The solution with the lowest pH 20.) The solution with the pH closest to neutral 21.) A buffer with a basic pH 22.) A buffer with an acidic pH

30. What is the [H+] in a 0.02 M nitrous acid (HNO 2 ) solution? (K a for HNO 2 is 4.5 x 10 -4 ) (A) 2.25 x 10 -2 (B) 3.0 x 10 -3 (C) 5.1 x 10 -4 (D) 9.0 x 10 -6 (E) 2.6 x 10 -7

31. BaF 2 is slightly soluble in water. The addition of dilute HF to a saturated solution of BaF 2 at equilibrium is expected to: (A) Raise the pH (B) React with BaF 2 to produce hydrogen gas (C) increase the solubility of BaF 2 (D) Decrease the solubility of BaF 2 (E) produce no change in the solution

32. At 25 o C, an aqueous solution with a pH of 6 has a hydroxide concentration [OH-], of: (A) 1 x 10 -6 M (B) 1 x 10 -8 M (C) 0.006 M (D) 6 M (E) 8 M