Question: It is quite common for a solid to change from

It is quite common for a solid to change from one structure to another at a temperature below its melting point. For example, sulfur undergoes a phase change from the rhombic crystal structure to the monoclinic crystal form at temperatures above 95oC.
a. Predict the signs of ΔH and ΔS for the process Srhombic → Smonoclinic.
b. Which form of sulfur has the more ordered crystalline structure (has the smaller positional probability)?

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  • CreatedMay 05, 2015
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