Chemistry and Chemical Reactivity (9th Edition)

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

Chapter 5 Principles of Chemical Reactivity: Energy and Chemical Reactions - Study Questions - Page 217e: 69


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Work Step by Step

Enthalpies of formation (kJ/mol) $O(g): 249.170, O_2(g): 0, O_3(g): 142.67$ Oxygen's standard state is $O_2(g)$. Formation of oxygen atoms from $O_2(g)$ is endothermic since the former has a higher enthalpy of formation than the latter. To create 1 mol of ozone from $O_2(g)$ 142.67 kJ are required.
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