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Question

Which of the following statements is true concerning the reaction below?
C(s, graphite)→C(s, diamond)

SubstanceHºf(kJ/mol) at 298 KSº(J/(mol·K)) at 298 K
C(s, graphite)05.740
C(s, diamond)1.8972.377
A) Under standard-state conditions, the reaction is spontaneous at all temperatures.
B) Under standard-state conditions, the reaction is spontaneous only at temperatures above 564 K.
C) Under standard-state conditions, the reaction is spontaneous only at temperatures below 564 K.
D) Under standard-state conditions, the reaction is at equilibrium at 298 K.
E) Under standard-state conditions, the reaction is not spontaneous at any temperature.

Answer

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