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Citation: Chenxi Zhang, Han Su, Shuyong Zhang. 关于Arrhenius公式的几点讨论[J]. University Chemistry, ;2022, 37(7): 220403. doi: 10.3866/PKU.DXHX202204035 shu

关于Arrhenius公式的几点讨论

School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China

Corresponding author: Shuyong Zhang, syzhang@sdu.edu.cn
Received Date: 12 April 2022

Arrhenius公式是最重要的化学动力学经验公式，提出百余年来，科学家对其的讨论从未停止。本文溯源了该公式产生的历史过程，进一步说明其与van't Hoff方程的联系。针对普遍接受的Tolman活化能的物理意义进行了讨论，给出了修正建议。对活化能随温度变化的情况进行了讨论，对Arrhenius公式的适用温度范围进行了量化说明，建议对于分子结构较复杂的反应，即便在通常温度范围内，亦应采用三常数公式。对物理化学教材中与Arrhenius公式具有相似形式的公式进行了概括，说明了其相似性的本质。相关讨论有助于师生更正确地理解和使用Arrhenius公式。
- Arrhenius equation,
- Tolman activation energy,
- Temperature validity range,
- Thermodynamic relation
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