sulfur undergoes a phase change from the rhombic crystal structure to the monoclinic form at 95.3 °C.
We need to use the Gibbs Free Energy equation....
G = H - TS (I've omitted the deltas, but assume they are there)
H = 0.202 KJ/mol = 202 J/mol
T = 273 + 95.3 = 368.3 K
Assume, G = 0 KJ/mol
So essentially, H = TS. Solving for S...
S = H/T = 202J/mol / 368.3 K
= 0.548 J/K/mol
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