Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 15 - Chemical Equilibrium - Exercises - Page 663: 15.17a

Answer

Mostly reactants

Work Step by Step

The expression for Kc has the concentrations of products in the numerator and the concentration of reactants in the denominator. Therefore, if Kc is large, it is mostly products and if it is small, it is mostly reactants. Here, it is small (less than 1) so mostly reactants.
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