CHE 112 Answers for Equilibrium Questions

1) 2.1 x 10^5 (Original expression is inverted & squared.)

2a) Not at equilibrium. Q = 0.060 which is greater than Kc.

2b) Q is greater than Kc...'too many' products with respect to reactants, so REVERSE Reaction occurs.

3) In the order substances are listed in chemical equation, 0.0049 M, 0.0049 M, 0.0451 M, 0.0451 M.

4) In the order substances are listed in chemical equation, 0.20 M, 5.0 x 10^-6 M.

5) In the order substances are listed in chemical equation, 0.049 M, 0.049 M. 0.451 M, 0.451 M.