Which statement is true? A reaction in which the entropy of the system decreases can be spontaneous only if it is exothermic. A reaction in which the entropy of the system decreases can be spontaneous only if it is endothermic. A reaction in which the entropy of the system increases can be spontaneous only if it is exothermic. A reaction in which the entropy of the system increases can be spontaneous only if it is endothermic.
Which statement is true? A reaction in which the entropy of the system decreases can be spontaneous only if it is exothermic. A reaction in which the entropy of the system decreases can be spontaneous only if it is endothermic. A reaction in which the entropy of the system increases can be spontaneous only if it is exothermic. A reaction in which the entropy of the system increases can be spontaneous only if it is endothermic.
General Chemistry - Standalone book (MindTap Course List)
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
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Chapter18: Thermodynamics And Equilibrium
Section: Chapter Questions
Problem 18.94QP
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Which statement is true?
A reaction in which the entropy of the system decreases can be spontaneous only if it is exothermic.
A reaction in which the entropy of the system decreases can be spontaneous only if it is endothermic.
A reaction in which the entropy of the system increases can be spontaneous only if it is exothermic.
A reaction in which the entropy of the system increases can be spontaneous only if it is endothermic.
Expert Solution
Step 1
For a reaction to be spontaneous, ∆G must be negative.
For ∆G to be negative, either ∆H should be negative (exothermic) or the magnitude of ∆S should be greater than ∆H (if ∆H is positive, endothermic).
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