Question

As O2(l) is cooled at 1 atm, it freezes at 54.5 K to form solid I. At a lower temperature, solid I rearranges to solid II, which has a different crystal structure. Thermal measurements show that ΔH for the I → II phase transition is –743.1 J/ mol, and DS for the same transition is 217.0 J K-1 mol-1. At what temperature are sol-ids I and II in equilibrium?


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  • CreatedMay 05, 2015
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