Introductory Chemistry (5th Edition)

Published by Pearson
ISBN 10: 032191029X
ISBN 13: 978-0-32191-029-5

Chapter 15 - Chemical Equilibrium - Exercises - Problems - Page 566: 45

Answer

(a) $K_{eq} = \frac{[Cl_2]}{[PCl_5]}$ (b) $K_{eq} = [O_2]^3$ (c) $K_{eq} = \frac{[F^-][H_3O^+]}{[HF]}$ (d) $K_{eq} = \frac{[NH_4^+][OH^-]}{[NH_3]}$

Work Step by Step

1. Write the fraction: $K_{eq} = \frac{[Products]}{[Reactants]}$ Remember: Those expressions do not consider solids (s) or liquids (l). 2. Put the balancing coefficient as the exponent of the concentration of the compound the coefficient is in front of.
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