Chemistry: The Molecular Science (5th Edition)

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

Chapter 12 - Chemical Equilibrium - Questions for Review and Thought - Topical Questions - Page 563g: 79a

Answer

The reaction will be favorable if Gibb's Free Energy is negative. Recall the equation for Gibb's Free Energy: $\Delta G^{\circ}=\Delta H^{\circ}-T\Delta S^{\circ}$. From this, we see that when looking for a favorable reaction, it is best for energy to be negative and for entropy to be positive. (Entropy is positive when there are more moles of gaseous products, and it will be negative when there are more moles of gaseous reactants.) Seeing this, we see that entropy and energy both do favor the reaction.

Work Step by Step

The reaction will be favorable if Gibb's Free Energy is negative. Recall the equation for Gibb's Free Energy: $\Delta G^{\circ}=\Delta H^{\circ}-T\Delta S^{\circ}$. From this, we see that when looking for a favorable reaction, it is best for energy to be negative and for entropy to be positive. (Entropy is positive when there are more moles of gaseous products, and it will be negative when there are more moles of gaseous reactants.) Seeing this, we see that entropy and energy both do favor the reaction.
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.