General, Organic, and Biological Chemistry: Structures of Life (5th Edition)

Published by Pearson
ISBN 10: 0321967461
ISBN 13: 978-0-32196-746-6

Chapter 10 - Reaction Rates and Chemical Equilibrium - Understanding the Concepts - Page 396: 10.40

Answer

a. $$K_c = \frac{[ CO_2 ]^{ 4 }[ H_2O ]^{ 6 }}{[ C_2H_6 ]^{ 2 }[ O_2 ]^{ 7 }}$$ b. $$K_c = \frac{[ K_2CO_3 ][ CO_2 ][ H_2O ]}{[ KHCO_3 ]^{ 2 }}$$ c.$$K_c = \frac{[ NO ]^{ 4 }[ H_2O ]^{ 6 }}{[ NH_3 ]^{ 4 }[ O_2 ]^{ 5 }}$$

Work Step by Step

1. Write the equilibrium constant expression: - The exponent of each concentration is equal to its balance coefficient. a. $$K_c = \frac{[Products]}{[Reactants]} = \frac{[ CO_2 ]^{ 4 }[ H_2O ]^{ 6 }}{[ C_2H_6 ]^{ 2 }[ O_2 ]^{ 7 }}$$ b. $$K_c = \frac{[Products]}{[Reactants]} = \frac{[ K_2CO_3 ][ CO_2 ][ H_2O ]}{[ KHCO_3 ]^{ 2 }}$$ c. $$K_c = \frac{[Products]}{[Reactants]} = \frac{[ NO ]^{ 4 }[ H_2O ]^{ 6 }}{[ NH_3 ]^{ 4 }[ O_2 ]^{ 5 }}$$
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