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Problem 47

(a) Is an endothermic reaction more likely to be spontaneous at higher temperatures or lower temperatures? Explain.
(b) The change depicted below occurs at constant pressure. Explain your answers to each of the following: (1) What is the sign of $\Delta H_{\text { sys }} ?(2)$ What is the sign of $\Delta S_{\text { sys }} ?(3)$ What is the sign of $\Delta S_{\text { surr }} ?(4)$ How does the sign of $\Delta G_{\text { sys }}$ vary with temperature?

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Chapter 20
Thermodynamics: Entropy, Free Energy, and the Direction of Chemical Reactions
CHEMISTRY: The Molecular Nature of Matter and Change 2016

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