Answer
Positive.
Work Step by Step
Moles of gas is increased from 2 to 3. This is accompanied by an increase in entropy. Therefore, $\Delta_{r}S^{\circ}_{system}$ is positive.
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 18 - Thermodynamics: Directionality of Chemical Reactions - Questions for Review and Thought - Topical Questions - Page 737b: 29c
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