Answer
See the answer below.
Work Step by Step
For a first-order reaction:
$ln(C/C_0)=-kt$
a) $ln\ 0.85=-0.00106.t\rightarrow = t=153.3\ min$
b) $ln\ 0.15=-0.00106.t\rightarrow = t=1789.7\ min$
Chemistry and Chemical Reactivity (9th Edition)
by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.
Published by
Cengage Learning
ISBN 10:
1133949649
ISBN 13:
978-1-13394-964-0
Chapter 14 Chemical Kinetics: The Rates of Chemical Reactions - Study Questions - Page 553b: 19
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