Chemistry: The Molecular Science (5th Edition)

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

Chapter 16 - Thermodynamics: Directionality of Chemical Reactions - Conceptual Exercise 16.4 - Predicting Entropy Changes - Page 705: b


Entropy increases because the change is from solid-state to aqueous state in which ions can move freely among water molecules.

Work Step by Step

Entropy increases when a pure solid dissolves in a solvent. Therefore, when NaCl is changed from solid-state to aqueous state, entropy is expected to increase.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.