Chemistry: The Central Science (13th Edition)

by Brown, Theodore E.; LeMay, H. Eugene; Bursten, Bruce E.; Murphy, Catherine; Woodward, Patrick; Stoltzfus, Matthew E.

Published by Prentice Hall

ISBN 10: 0321910419

ISBN 13: 978-0-32191-041-7

Chapter 5 - Thermochemistry - Exercises - Page 206: 5.44a

Answer

Endothermic

Work Step by Step

Looking at the $\Delta H $ for the reaction, we see that it has a positive value of 252.8kJ. Since it is positive, it shows that the energy of the system is increasing, meaning that energy is entering the system. This means that it is endothermic.

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