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The reaction that is the most exothermic will be the one with the most negative $\Delta H$. Using the calculations from part c, we find that this is the reaction with HBr.
Chemistry: The Molecular Science (5th Edition)
by Moore, John W.; Stanitski, Conrad L.
Published by
Cengage Learning
ISBN 10:
1285199049
ISBN 13:
978-1-28519-904-7
Chapter 4 - Energy and Chemical Reactions - Questions for Review and Thought - Topical Questions - Page 189d: 62d
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