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 217d: 64


$+103.61\ kJ/mol$

Work Step by Step

Enthalpies of formation (kJ/mol): $H_2O(l):-285.83, CO_2(g):393.509$ Enthalpy of combustion: $-4395.0=4\times-285.83+8\times-393.509-x$ $x=+103.61\ kJ/mol$, which is the enthalpy of formation of styrene.
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