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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Entropy of vaporization ： ウィキペディア英語版 Entropy of vaporization The entropy of vaporization is the increase in entropy upon vaporization of a liquid. This is always positive since the degree of disorder increases in the transition from a liquid in a relatively small volume to a vapor or gas occupying a much larger space. At standard pressure Po = 1 bar, the value is denoted as Δ''S''ovap and normally expressed in J mol−1 K−1. In a phase transition such as vaporization, both phases coexist in equilibrium, so the difference in Gibbs free energy is equal to zero. :$\backslash Delta\; G\_\; =\; \backslash Delta\; H\_\; -\; T\_\; \backslash times\; \backslash Delta\; S\_\; =\; 0$, where $\backslash Delta\; H\_$ is the heat or enthalpy of vaporization. Since this is a thermodynamic equation, the symbol T refers to the absolute thermodynamic temperature, measured in Kelvin (K). The entropy of vaporization is then equal to the heat of vaporization divided by the boiling point. : $\backslash Delta\; S\_\; =\; \backslash frac\; \}$ According to Trouton's rule, the entropy of vaporization (at standard pressure) of most liquids is about 85 to 88 J mol−1 K−1. ==See also== *Entropy of fusion 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Entropy of vaporization」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.