Question

Consider the conversion of white tin to gray tin:
Sn(white) -> Sn(gray) H = -2.09 kJ S = -7.41 J/K
based on these data,
A) white tin is stable below 9C and gray tin is stable above 9C.
B) gray tin is stable below 9C and white tin is stable above 9C.
C) white tin is stable below 15C and gray tin is stable above 15C.
D) gray tin is stable below 15C and white tin is stable above 15C.

Answer

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