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arXiv physics/9805016physics.chem-phcond-mat.stat-mech
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通过精确热力学公式的化学缔合

Chemical Association via Exact Thermodynamic Formulations

Michael E. Fisher, Daniel M. Zuckerman

摘要:

从反应A + B C的“化学”角度来观察吸引单体A和B的双组分物理体系是很有成效<->的,其中C = AB是一个缔合对或络合物。我们展示了如何构建自由能的三个组件或化学图片,在质量作用平衡,准确地再现任何给定的两个组件或“物理”热力学。顺序匹配条件和封闭形式的化学表示揭示了可用于修改A-C,B-C和C-C相互作用以及调整缔合常数的自由度。理论(在更简单的单组分中,即,A = B,情况)通过处理范德华流体来说明。

英文摘要:

It can be fruitful to view two-component physical systems of attractive monomers, A and B, ``chemically'' in terms of a reaction A + B <-> C, where C = AB is an associated pair or complex. We show how to construct free energies in the three-component or chemical picture which, under mass-action equilibration, exactly reproduce any given two-component or ``physical'' thermodynamics. Order-by-order matching conditions and closed-form chemical representations reveal the freedom available to modify the A-C, B-C, and C-C interactions and to adjust the association constant. The theory (in the simpler one-component, i.e., A = B, case) is illustrated by treating a van der Waals fluid.

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