The centenary progress and leap of the statements of the third law of thermodynamics
陈晓航 苏山河 周颖慧 陈金灿1
作者信息
1. 厦门大学
折叠
Abstract
The third law of thermodynamics has been verified experimentally, but how to perfectly express such a law in theory has become a cross-century problematic issue. It is found that by introducing an innovative method, the Nernst equation can be obtained directly from the experimental data of chemical reactions at low temperatures without the need for artificial additional assumptions appearing in textbooks, so that the Nernst theorem should be replaced by the Nernst statement. It is also found that the heat capacity statement can be obtained from the experimental data of the heat capacity at low temperatures. The heat capacity statement and the Nernst statement are proved to be mutually derivable and the two are equivalent. The unattainability principle of absolute zero temperature is only a corollary of the Nernst statement or the heat capacity statement. Simultaneously, the defects and deficiencies related to the contents of the third law of thermodynamics appearing in textbooks are pointed out and corrected. The results obtained show clearly that the Nernst theorem and the unattainability principle of absolute zero temperature should be withdrawn from the statements of the third law of thermodynamics. It is important to find that the Nernst statement and the heat capacity statement are two equivalent statements of the third law of thermodynamics, which can solve the centennial debate problems of the third law of thermodynamics and supply the perfect statements for the third law of thermodynamics.
Key words
Nernst equation/ Nernst theorem/ Nernst statement/ Heat capacity statement/ The unattainability principle of absolute zero temperature/ The third law of thermodynamics
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陈晓航,苏山河,周颖慧,陈金灿.The centenary progress and leap of the statements of the third law of thermodynamics[EB/OL].(2026-05-06)[2026-05-06].https://sinoxiv.napstic.cn/article/25819333.
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