Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 14 Chemical Kinetics: The Rates of Chemical Reactions - 14-4 Concentration-Time Relationships: Integrated Rate Laws - Review & Check for Section 14-4 - Page 528: 1



Work Step by Step

For first-order processes: $ln\left( \dfrac{[N_2O_5]_t}{[N_2O_5]_0}\right)=-kt$ $t_{1/2}=\dfrac{0.693}{k}$ For 99% decomposition: $ln(0.01)=-0.693\times\frac{t}{t_{1/2}}$ $\frac{t}{t_{1/2}}=6.65$
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