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Topic: A question about Gibbs free energy  (Read 1950 times)

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Offline yomi

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A question about Gibbs free energy
« on: August 31, 2011, 09:10:45 AM »
Which compound will become more stable with respect to its elements if the temperature is raised?
NO(g)
CuO(s)
PCl5(g)
SO2(g)
NH3(g)

The answer are NO(g) and SO2(g).
I should predict their entropy, right? But PCl5's entropy is the biggest.
Why are the answer NO(g) and SO2(g)?
 
 
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yyfzxmj

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Re: A question about Gibbs free energy
« Reply #1 on: September 02, 2011, 03:18:41 AM »
What is the general trend for hydrates vs anhydrates (crystals) with respect to solubility. I've checked two references that gave me different answers. Any suggestions?
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