Talk:Entropy of vaporization

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Chemistry Mid‑importance

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Entropy is Not a measure of disorder. It is a measure of the density of states. This article should be fixed to reflect that fact. —Preceding unsigned comment added by 67.186.236.229 (talk) 17:22, 30 October 2010 (UTC)[reply]

"In a phase transition such as vaporization, both phases coexist in equilibrium, so the difference in Gibbs free energy is equal to zero." Neither of these statements is true in general. Vaporization can of course take place out of equilibrium, as would happen e.g. if you dropped a liquid in an evacuated chamber, unless there's something meant technically by the term "vaporization" which I'm not understanding. And gibbs free energy difference = 0 for equilibrium coexisting phases implies temperature and pressure exchange with the environment, which is not always true. [Comment by 100.33.69.106 dated 12 August 2021].

Yes, you are correct. I have now revised the sentence to clarify that ΔG = 0 only applies when there is equilibrium at constant T and p. Thank you for pointing out the errors. Dirac66 (talk) 19:23, 12 August 2021 (UTC)[reply]