Math 14a

Math 14a: Additional Math Problems Involving Keq

Calculate the Keq for the following hypothetical reactions.

(Assume that all components of the reactions are gaseous.)

    1. What is the Keq if at equilibrium, the concentration of A is 2.24 x 10-2 M and the concentrations of both C and D are 6.41 x 10-3 M. Reaction: A <=> C + D

    2. What is the Keq if at equilibrium, the concentration of both A and B are 3.23 x 10-5 M and the concentrations of both C and D are 1.27 x 10-2 M. Reaction: A + B <=> C + D

    3. What is the Keq if at equilibrium, the concentration of both A and B are 7.02 x 10-3 M and the concentration of C is 2.16 x 10-2 M. Reaction: A + B <=> 2C

    4. What is the Keq if at equilibrium, the concentration of A is 6.59 x 10-4 M and the concentration of C is 4.06 x 10-3 M, and the concentration of D is 2.03 x 10-3 M. Reaction: 2A <=> 2C + D

    5. What is the Keq if at equilibrium, the concentration of both A and B are 3.73 x 10-4 M and the concentrations of C, D and E are 9.35 x 10-4 M. Reaction: A + B <=> C + D + E

    6. What is the Keq if at equilibrium, the concentration of A is 5.50 x 10-3 M, the concentration of B is 2.25 x 10-3 M, and the concentration of C is 1.02 x 10-2 M. Reaction: 2A + B <=> 2C

Answers:

1) Keq = 1.83 x 10-3

3) Keq = 9.47

5) Keq = 5.88 x 10-3