Drill: Calculate the solubility of PbSO 4 K sp = 2.0 x 10 -14

1. Drill: Calculate the solubility of PbSO4Ksp = 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. 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. Oxidation Number • The charge of a single atom

8. Oxidation • The act of losing electrons • Oxidation number increases

9. 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 MnO4-1 + 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