Answer
5 mM/s
Work Step by Step
We are asked to find the instantaneous rate of the reaction after 20 seconds. Most of us do not know Calculus, so we will use an approximation: $$ \frac{.1305-.130}{21-20}=5 mM/s$$
Chemistry: The Molecular Science (5th Edition)
by Moore, John W.; Stanitski, Conrad L.
Published by
Cengage Learning
ISBN 10:
1285199049
ISBN 13:
978-1-28519-904-7
Chapter 11 - Chemical Kinetics: Rates of Reactions - Questions for Review and Thought - Topical Questions - Page 523a: 12c
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