1.  Identify the conjugate acids of the bases C5H5N (pyridine), HPO42-, O2-, CH3COOH, [Co(CO)4]-, CN-.

2.  Use Pauling’s rules to place the following acids in order of increasing acid strength: HNO2, H2SO4, HBrO3, and HClO4 in a nonlevelling solvent.

3.  Which member of the following pairs is the stronger acid? Give reasons for the choice.

[Fe(OH2)6]3+ or [Fe(OH2)6]2+

4.  Arrange the oxides Al2O3, B2O3, BaO, CO2, Cl2O7, SO3 in order from the most acidic through amphoteric to the most basic?

5.  Which of the following reactions are predicated to have an equilibrium constant greater than 1? Unless otherwise stated, assume gas-phase or hydrocarbon solution and 25oC.

R3PBBr3 + R3NBF3 à R3PRBF3 + R3NBBr3

6.  Predict whether the equilibrium constants for the following reactions should be greater than 1 or less than 1

[CuI4]2-(aq) + [CuCl4]3-(aq) à [CuCl4]2-(aq) + [CuI4]3-(aq)

7.  Balance the following redox reaction in acid solution: MnO4- + H2SO3 à Mn2+ + HSO4-. Predict the qualitative pH dependence on the net potential for this reaction (that is, increases, decreases, remains the same).

8.  Use standard potentials as a quide to write equations for the main net reaction that you would predict in the following experiments

I2 is added to excess aqueous HClO3.

9.  Characterize the condition of acidity or basicity that would most favour the following transformations in aqueous solution.

ClO4- à ClO3-

10.  Give an example of an acidic, a basic, and an amphoteric oxide from the same family in the Periodic Table.

11.  Identify the following as Lewis acids or bases and rank them in order of increasing hardness. Explain the reasoning.

O(CH3)2 S(CH3)2 Se(CH3)2

12.  The figure below is part of the modified Latimer diagram for nitrogen under conditions

of 1.0 M OH-(aq). Identify the species in the Latimer diagram provided that are unstable

with respect to disproportionation in 1.0 M hydroxide. State your reasoning. Calculate x.

13.  Write and balance the equation for the disproportionation of sulfite (SO32-) into sulfate and sulfide ions in basic solution.