The document discusses solubility and solubility products, oxidation-reduction reactions, and voltaic cells. It defines key concepts like reducing agents, oxidizing agents, and half-reactions. It also discusses standard reduction potentials, how to determine if a reaction involves oxidation-reduction, and how to balance half-reactions to indicate oxidation or reduction. Sample problems are provided to calculate equilibrium constants from solubility products and oxidation states in reactions.

1. GENERAL CHEMISTRY-II (1412)
S.I. # 26
1. The Solubility of an y compound in ____________can be converted to
____________. The ____________can be used to determine the____________of ions
in a solution. The ____________ of ions can be used to calculate ______. The steps
can be __________ and solubility calculated from ___Pg 741
2. Fill in the boxes below:
(g/L) (mol/L) ions Ksp
3. Ksp for AgI is 8.3x10-17 (appendix D) and Kf for Ag(CN)2- is 1x1021 (pg750 table
17.1) calculate the equilibrium constant for the reaction
AgI(s) + 2CN-(aq)  Ag(CN)2-(aq) + I-(aq)
4. Define reducing agent and oxidizing agent and give their functions.
5. What is a half-reaction?
6. Define anode and cathode in terms of a voltaic cell.
7. What is the function of a salt bridge?

2. 8. What is emf?
9. The emf of a cell is called ______________. And when it is under standard
conditions it is called _______________. For a half-reaction, _____ is a measure of
the tendency of the reduction to occur. The value of _____ is _______ for a voltaic
cell and can be found by the equation: ___________________________________.
______________ has the most positive value for _____ and is the strongest oxidizing
agent.
10. Indicate whether the following balanced equations involve oxidation-reduction.
If they do, identify the elements that undergo changes in oxidation number.
A. PBr3(l) + 3 H2O (l)  H3PO3(aq) + 3 HBr (aq)
B.NaI (aq) + 3 HOCl(aq)  NaIO3 (aq) + 3 HCl (aq)
C. 3 SO2(g) + 2 HNO3 + H2O(l)  3 H2SO4(aq) + 2 NO(g)
D. 2 H2SO4(aq) + 2 NaBr(s)  Br2(l) + SO2(g) + Na2SO4(aq) 2 H2O (l)
11. complete and balance the half reactions and indicate whether the half is
reduction or oxidation.
A. Mo3+  Mo(s)
B. H2SO3(aq)  SO42-(aq)
C. NO3-(aq)  NO(g)
D. Mn2+(aq)  MnO2(s)
E. Cr(OH)3(s)  CrO42- (aq)