Answer
$\Delta S_{sys}\lt 0$
Work Step by Step
The two reactants are gases and the product is solid. The product represents a condition of lower entropy. Therefore, $\Delta S$ would be negative.
Chemistry: A Molecular Approach (3rd Edition)
by Tro, Nivaldo J.
Published by
Prentice Hall
ISBN 10:
0321809246
ISBN 13:
978-0-32180-924-7
Chapter 17 - Sections 17.1-17.9 - Exercises - Problems by Topic - Page 853: 32d
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