Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 5 - Thermochemistry - Exercises - Page 203: 5.6c

Answer

$\Delta E_{CD}=\Delta E_1-\Delta E_3$

Work Step by Step

$\Delta E_{CD}$ is the difference in energy between state C and state D. According to the diagram $E_C=E_A+\Delta E_1$ $E_D=E_A+\Delta E_3$ So $\Delta E_{CD}=(E_A+\Delta E_1)-(E_A+\Delta E_3)$ $\Delta E_{CD}=E_A+\Delta E_1-E_A-\Delta E_3$ $\Delta E_{CD}=\Delta E_1-\Delta E_3$
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