Chemistry: The Central Science (13th Edition)

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

Chapter 14 - Chemical Kinetics - Exercises - Page 616: 14.3b


$rate=-\frac{(\Delta B)}{\Delta t}=(\frac{1}{2})(\frac{\Delta A}{\Delta t})$

Work Step by Step

Rate of reaction is a function of the change in reactant or product over time. Since B is decreasing and rate must be positive, the sign must be reversed. Since 2 units of A are produced in each reaction, the change in concentration must be halved to find the rate.
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