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| ===相变=== | | ===相变=== |
− | 在恒定的温度和压力下会发生可逆的[https://en.wikipedia.org/wiki/Phase_transition 相变]。可逆热是跃迁的焓变,熵变是焓变除以热力学温度。<ref>{{cite book|first=Michael E.|last=Starzak|date=2010|chapter=Phase Equilibria & Colligative Properties|chapter-url=https://books.google.ca/books?id=cw0QV7l559kC&pg=PA138|title=Energy & Entropy: Equilibrium to Stationary States|pages=138–140|isbn=978-1489983671|publisher=Springer Science+Business Media|accessdate=2019-09-05}}</ref>对于在熔点T m处固体与液体的熔化,熔化的熵为 | + | 在恒定的温度和压力下会发生可逆的[https://en.wikipedia.org/wiki/Phase_transition 相变]。可逆热是跃迁的焓变,熵变是焓变除以热力学温度。<ref>{{cite book|first=Michael E.|last=Starzak|date=2010|chapter=Phase Equilibria & Colligative Properties|chapter-url=https://books.google.ca/books?id=cw0QV7l559kC&pg=PA138|title=Energy & Entropy: Equilibrium to Stationary States|pages=138–140|isbn=978-1489983671|publisher=Springer Science+Business Media|accessdate=2019-09-05}}</ref>对于在熔点T m处固体与液体的熔化,熔化的熵为<math>\Delta S_\text{fus} = \frac{\Delta H_\text{fus}}{T_\text{m}}</math>。 |
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− | <center><math>\Delta S_\text{fus} = \frac{\Delta H_\text{fus}}{T_\text{m}}</math>。</center>
| + | 类似地,对于汽化在沸点的液体到气体的 ''T''<sub>m</sub>,所述[https://en.wikipedia.org/wiki/Vaporization 汽化熵]是:<math>\Delta S_\text{vap} = \frac{\Delta H_\text{vap}}{T_\text{B}}</math>。 |
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− | 类似地,对于汽化在沸点的液体到气体的 ''T''<sub>m</sub>,所述[https://en.wikipedia.org/wiki/Vaporization 汽化熵]是: | |
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− | <center><math>\Delta S_\text{vap} = \frac{\Delta H_\text{vap}}{T_\text{B}}</math>。</center>
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| ==熵的理解方式== | | ==熵的理解方式== |