Chemistry (4th Edition)

Published by McGraw-Hill Publishing Company
ISBN 10: 0078021529
ISBN 13: 978-0-07802-152-7

Chapter 15 - Section 15.2 - The Equilibrium Constant - Checkpoint - Page 671: 15.2.1


The correct equilibrium expression is represented on alternative e).

Work Step by Step

$$K_c = \frac{[Products]}{[Reactants]}$$ Since there are 2 CO and 2 $CO_2$ in the balanced equation, both their concentrations are going to appear in the Kc expression to the power of 2. $$K_c = \frac{[CO_2]^2}{[CO]^2[O_2]}$$
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