114. Which statement is true? a. A reaction in which the entropy of the system increases can be spontaneous only if it is exothermic. b. A reaction in which the entropy of the system increases can be spontaneous only if it is endothermic. c. A reaction in which the entropy of the system decreases can be spontaneous only if it is exothermic.

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6 Oct 2018

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Chemistry Study Group

Which statement about a reaction is notcorrect?

	A. The free energy of a reaction depends on the amount anddirection of entropy and heat changes.
	B. If a reaction is exothermic and increases entropy, then thereaction is spontaneous.
	C. A reaction can be spontaneous if a decrease in the entropyof the system is offset by a large heat release.
	D. A reaction that is exothermic and causes a decrease in theentropy of the system cannot be a spontaneous reaction.

Which of the following statements is true of spontaneous reactions?

What can be said about an exothermic reaction with a negative entropy change?

The reaction is

What can be said about an exothermic reaction with a negative entropy change?

	spontaneous at all temperatures.
	spontaneous at high temperatures.
	spontaneous at low temperatures.
	spontaneous in the reverse direction at all temperatures.
	nonspontaneous in either direction at all temperatures.