General Chemistry 10th Edition

Published by Cengage Learning
ISBN 10: 1-28505-137-8
ISBN 13: 978-1-28505-137-6

Chapter 18 - Thermodynamics and Equilibrium - Questions and Problems - Page 773: 18.68

Answer

Please see the work below.

Work Step by Step

The sign of $\Delta S$ will be negative as there is a decrease in in moles as the seven moles of gaseous reactants forms four moles of product. The reaction is exothermic as well and so $\Delta H $ is negative.
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