1. Drill: Calculate the pH of 0. 10 M H2Z in 0. 50 M KHZ. Ka1 = 2
Drill: Calculate the pH of 0.10 M H2Z in 0.50 M KHZ. Ka1 = 2.0 x Ka2 = 5.0 x 10-9

2. Hydrolysis Reactions

3. Hydrolysis
Any reaction in which water is decomposed with all or part of its decomposition portions combining with the products

4. Water is added to decompose something
Hydrolysis
Water is added to decompose something

5. Hydrolysis
MX + HOH
HX + MOH

6. Salts

7. Ionic compounds that dissolve ~ 100 % in water
Salts
Ionic compounds that dissolve ~ 100 % in water

8. Salts of acids are negative

9. Salts of bases are Positive
(M+ or B+)

10. When salts dissolve, their ions can recombine with water
Salt Solutions
When salts dissolve, their ions can recombine with water

11. Salt Solutions
The salts of weak acids can recombine with water producing basic solutions

12. Salt Solutions
The salts of weak bases can recombine with water producing acidic solutions

13. Salt Solutions
A- + H2O HA + OH-
B+ + H2O H+ + BOH

14. Drill: Calculate the salt/acid ratio of a solution of benzoic acid & sodium benzoate at a pH of Ka HBz = 6.4 x 10-5

15. Drill: Calculate the pH of a solution of 0. 10 M NH3 in 0. 20 NH4Cl
Drill: Calculate the pH of a solution of 0.10 M NH3 in NH4Cl. Kb NH3 = 1.8 x 10-5

16. Salt or Hydrolysis Problems

17. Calculate the pH of a 0.20 M solution of NaBz
Salt Problem
Calculate the pH of a 0.20 M solution of NaBz
Ka = 6.4 x 10-5

18. Calculate the pH of a 0.10 M solution of R-NH3Cl
Salt Problem
Calculate the pH of a 0.10 M solution of R-NH3Cl
Kb = 2.5 x 10-5

19. Calculate the pH of a 0.18 M solution of KC2H3O2
Drill:
Calculate the pH of a 0.18 M solution of KC2H3O2
Ka = 1.8 x 10-5

20. AP CHM HW
Read: Chapter 14
Problems: 43
Page: 422

21. CHM II HW
Read: Chapter 18
Problems: 83
Page: 790

22. Calculate the pH of a 0.16 M solution of KC7H5O2
Drill:
Calculate the pH of a 0.16 M solution of KC7H5O2
Ka = 6.4 x 10-5

23. Short Test Friday

24. Salts of strong acids & weak bases make acidic solutions
Salt Applications
Salts of strong acids & weak bases make acidic solutions

25. Salts of strong bases & weak acids make basic solutions
Salt Applications
Salts of strong bases & weak acids make basic solutions

26. Salts of strong acids & strong bases make neutral solutions
Salt Applications
Salts of strong acids & strong bases make neutral solutions

27. Predict Relative pH
NaAc MnCl2
KNO3 NH4Br
KHSO4 NH4Ac

28. Predict Relative pH
KAc NaCl
KClO2 NH4Cl
K2SO4 NaI

29. Anhydrides
Compounds without water; that when added to water, form other compounds

30. Non-metal oxides that form acids when added to water
Acid Anhydrides
Non-metal oxides that form acids when added to water

31. Metal oxides that form bases when added to water
Basic Anhydrides
Metal oxides that form bases when added to water

32. Predict Relative pH
Na2O SO2
NO2 CO2
CaO Al2O3

33. Calculate the pH of a solution of 0.30 M KQ.
Ka HQ = 3.0 x 10-5

34. AP CHM HW
Read: Chapter 14
Problems: 35
Page: 422

35. CHM II HW
Read: Chapter 18
Problems: 67 & 75
Page:

36. Drill: Calculate the pH of a 0. 72 M NH4NO3 solution. Kb NH3 = 1
Drill: Calculate the pH of a 0.72 M NH4NO3 solution. Kb NH3 = 1.8 x 10-5

37. A/B eq, Buffer & Salt Hydrolysis Problems

38. AP Test
Thursday

39. 11. 2 g of KOH was added to 2. 0 L of 0. 075 M H2CO3
11.2 g of KOH was added to 2.0 L of M H2CO3. Calculate the molarity of all ions present in the solution. Ka1 = 4.4 x 10-7 Ka2 = 4.8 x 10-11

40. You need to make a buffer solution with its greatest buffering capacity at pH ~ 5.4. In general terms, describe what acid or base you would chose, & how you would make the buffer.

41. Calculate the pH of 0.10 M HF. Ka HF = 6.5 x 10-4

42. Calculate [H3PO4], [H2PO4-1], [HPO4-2], [PO4-3], [K+], [H+], & pH of 1
Calculate [H3PO4], [H2PO4-1], [HPO4-2], [PO4-3], [K+], [H+], & pH of 1.0 M KH2PO4 in 0.50 M K2HPO4. Ka1 = 7.5 x Ka2 = 6.2 x Ka3 = 4.2 x 10-13

43. Calculate the pH of 0.10 M HF in 0.20 M NaF. Ka HF = 6.5 x 10-4

44. Calculate the pH of 5.0 M KCN. KaHCN= 5.0 x 10-10

45. Calculate pH of:
0.20 M MOH in
0.50 M MCl
Kb = 5.0 x 10-5

46. Calculate pH of:
0.20 M MCl
Kb = 5.0 x 10-5

47. Drill: Calculate the pH of 0.20 M KQ. Ka HQ = 8.0 x 10-5

48. 1. 5 L of 0. 25 M Ba(OH)2 was added to 1. 0 L of 0. 60 M H2SO3
1.5 L of 0.25 M Ba(OH)2 was added to 1.0 L of 0.60 M H2SO3. Calculate [H2SO3], [HSO3-], [SO3-2], [H+], [OH-], & pH of the solution. Ka1 = 1.7 x 10-2 Ka2 = 6.0 x 10-8

49. Review of Acid/Base descriptions and Acid/Base, Buffer, & Salt Equilibria

50. Arhenius, Bronsted-Lowry, & Lewis Acids & Bases

51. Strong Acids
Strong Bases

52. Acid rxns
Base rxns

53. A/B Equilibrium Constants
KW, KA, KB, & pH

54. Calculate pH of:
0.025 M HNO3
0.020 M KOH

55. Calculate pH of:
0.20 M HNO2
Ka = 2.0 x 10-4

56. Calculate pH of:
3.0 M HZ in
2.0 M KZ
Ka HZ = 3.0 x 10-5

57. Calculate pH of:
0.20 M KR
Ka HR = 2.0 x 10-5

58. 150 mL of 0. 10 M KOH was added to 100. 0 mL of 0. 10 M H2CO3
150 mL of 0.10 M KOH was added to mL of 0.10 M H2CO3. Calculate [H2CO3], [HCO3-], [CO3-2], [H+], [OH-], & pH of the solution. Ka1 = 4.4 x 10-7 Ka2 = 4.7 x 10-11

59. Calculate [H3A], [H2A-1], [HA-2], [A-3], [K+], [H+], [OH-], & pH of 2
Calculate [H3A], [H2A-1], [HA-2], [A-3], [K+], [H+], [OH-], & pH of 2.0 M KH2A. Ka1 = 4.0 x Ka2 = 5.0 x Ka3 = 2.5 x 10-13

60. Calculate pH of:
2.0 M HQ
Ka = 2.0 x 10-6

61. Calculate pH of:
0.60 M HZ in
0.90 M KZ
Ka HZ = 3.0 x 10-5

62. Calculate pH of:
0.20 M KQ
Ka HQ = 2.0 x 10-7