Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 13 - The Chemistry of Solutes and Solutions - Questions for Review and Thought - Topical Questions - Page 605b: 22



Work Step by Step

$\Delta_{r}H_{solution}=-lattice\,energy+ total\, enthalpy\,of\, hydration\,of\,ions$ $=-(-2258\,kJ/mol)+(-2175\,kJ/mol)$ $=83\,kJ/mol$ As $\Delta_{r}H$ is greater than 0, this is an endothermic process (heat absorbing process).
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