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 - Study Questions - Page 553e: 57


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Work Step by Step

a) The 1/[NH4NCO] vs t plot has a better straight-line fit than ln [NH4NCO] vs t, so the reaction is of second-order. b) The regression is: $1/C=0.0109\dot{}t+2.211=kt+1/C_0$, so $k=0.0109\ min^{-1}$ and $C_0=0.452\ M$ c) $1/(0.5\dot{}0.452\ M)=0.0109\dot{}t+2.211\rightarrow t=203.1\ min=t_{1/2}$ d) $1/C=0.0109\dot{}t+2.211\rightarrow C(12\dot{}60)=0.0994\ M$
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