Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1259188132
ISBN 13: 978-1-25918-813-8

Chapter 6 - Energy and Metabolism - 6.3 ATP: The Energy Currency of Cells - Data Analysis - Page 113: 1

Answer

-3.9kcal/mol. Exergonic.

Work Step by Step

To find the net $\Delta$, add the $\Delta$ values for the two coupled reactions, which really make one overall reactions when coupled. Negative $\Delta$ values mean that reactions will be spontaneous/exergonic, releasing free energy. That is what the large free energy release from ATP hydrolysis does, make non-spontaneous reactions spontaneous by coupling.
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