## Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning

# Chapter 14 Chemical Kinetics: The Rates of Chemical Reactions - Study Questions - Page 553b: 18

#### Answer

$t=57.2\ h$

#### Work Step by Step

First order process: $ln([cp.]/[cp.]_0)=-kt$ $ln(0.020/0.080)=-2.42\times10^{-2}h^{-1}\times t\rightarrow t=57.2\ h$

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