1. Drill: Calculate the solubility of PbSO4 Ksp = 2.0 x 10-14

2. Review Drill & Check HW

3. CHM II HW
Review PP-27
Complete the attached assignment & turn it in tomorrow.

4. Oxidation Reduction Reactions (REDOX)

5. Chemical reactions in which electrons are transferred
REDOX Reactions
Chemical reactions in which electrons are transferred

6. Chemical Charge
A positive, neutral, or negative number assigned to a particle & determined by the difference between the # of protons & electrons

7. The charge of a single atom
Oxidation Number
The charge of a single atom

8. The act of losing electrons Oxidation number increases

9. The act of gaining electrons Oxidation number decreases
Reduction
The act of gaining electrons
Oxidation number decreases

10. REDOX Fact
You cannot have oxidation without reduction or reduction without oxidation

11. Oxidizing Agent A substance that oxidizes another
The oxidizing agent will be reduced

12. Reducing Agent A substance that reduces another
The reducing agent will be oxidized

13. Determine elements being: oxidized & reduced
MnO NH3
MnO2 + NO2-1

14. Drill: determine ox # of each element:
MnO4-1 + Fe
Mn2O3 + FeO

15. Balance the following in Acid:
MnO4-1 + Fe
Mn2O3 + FeO

16. Balancing REDOX Reactions

17. Balancing Redox Rxns Determine all ox #
Determine elements being oxidized & reduced
Divide rxn into half-rxns
Balance half-rxns

18. Balancing Half-Rxns Balance redox elements Balance ox # with e-
Balance e- between the two half-rxns

19. Balancing Half-Rxns Balance total charge with H+ or OH-
Balance H’s with water
Check balance with oxygen

20. Balancing Redox Rxns 5) Add the two half-reactions
Cancel like substances from each side of the full reaction
Check work

21. Drill: Determine Ox #:
MnO2 + Cl-1
Mn+2 + Cl2
in acid

22. Balance Redox Rxn:
MnO2 + Cl-1
Mn+2 + Cl2
in acid

23. Review Drill & Check HW

24. CHM II HW
Review PP-27
Complete the attached assignment & turn it in on the next school day.

25. Balance Redox Rxn:
Cr2O7-2 + NH3
Cr+3 + NO3-1
in base

26. Balance REDOX Rxn:
MnO4-1 + N2O3
Mn+2 + N2O5
in acid

27. Drill: Determine Ox # for All
MnO4-1 N2O3
Mn+2 N2O5

28. Review & Collect Drill & HW

29. CHM II HW
Review PP-27
Complete the attached assignment & turn it in on the next school day.

30. Balance Redox Rxn:
FeCl2 + KNO3
FeCl3 + KNO2
in base

31. Balance Redox Rxn:
SO2 + Pb(OH)2
SO3 + Pb
in base

32. Drill Balance the following half-reaction:
H2O O2
In acid

33. Review & collect Drill & HW

34. CHM II HW
Review PP-27
Complete the attached assignment & turn it in on the next school day.

35. Balance Rxn:
HNO3 + Cu
N2O + Cu+2

36. Balance Redox Rxn:
Fe(NO3)3 + Cr(OH)4-1
Fe(NO3)2 + CrO4-2

37. Balance Redox Rxn:
SnF2 + KIO4
KI + SnF4
in acid

38. Balance Redox Rxn:
IO3-1 + I-1
I3-1
in acid

39. Balance Redox Rxn:
MnO2 + P4
Mn2O7 + PH3
in acid

40. Balance Redox Rxn:
PbBr2 + O2 + K+
PbBr4 + K2O
in acid

41. Balance Redox Rxn:
Ca + VO4-3
CaO + V+2
in acid

42. Balance Redox Rxn:
Ni(OH)2 + N2H4
Ni + N2
in base

43. Balance Redox Rxn:
P2O3 + K2CrO3
K3PO4 + Cr+2
in acid

44. Balance Redox Rxn:
SO + H2Cr2O7
H2SO4 + Cr+2

45. Balance Redox Rxn:
PH3 + KMnO4
P2O5 + Mn2O3
in KOH