Question

. Under 298 K and 101.325 kpa, the defined entropy of diamond and graphite is 2.45 J· mol^-1·K^-1 and 5.71 J· mol^-1·K^-1, respectively. Their standard combustion heat are

-395.40 kJ · mol^-1and -393.51 kJ·mol^-1, respectively. Calculate the value of

Graphite          Diamond

under these conditions, and explain which crystal is more stable at these conditions.

 

Answer 1

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