V2EX regular solution

Regular Solution

定义 / Definition

regular solution(正则溶液):物理化学中的一种非理想溶液模型。它通常假设:

  • 混合是随机的,并且混合熵与理想溶液相同;
  • 但由于分子间作用力差异,混合焓不为零(即存在热效应);
    因此用来描述“不是完全理想、但偏离方式较规则”的溶液行为。(在不同教材中假设细节可能略有差别。)

发音 / Pronunciation (IPA)

/rjlr slun/

例句 / Examples

A regular solution can deviate from Raoult’s law.
正则溶液可能会偏离拉乌尔定律。

In the regular solution model, the entropy of mixing is treated as ideal, while the enthalpy term accounts for nonideal interactions.
在正则溶液模型中,混合熵按理想情况处理,而焓项用来反映非理想的分子相互作用。

词源 / Etymology

regular 来自拉丁语 regularis(“按规则的、规整的”),源于 regula(“尺、规则”);solution 来自拉丁语 solutio(“溶解、松开、解开”)。合起来在化学语境中指“按种规则化假设建立的溶液模型”。

相关词 / Related Words

文学与著作示例 / Notable Works

  • Atkins’ Physical Chemistry(《阿特金斯物理化学》)在溶液非理想性与模型章节中讨论 regular solution 的思想与应用。
  • Thermodynamics by Lewis and Randall(Lewis 与 Randall《热力学》)经典热力学框架下涉及溶液模型与偏离理想行为的处理。
  • Molecular Thermodynamics of Fluid-Phase Equilibria by Prausnitz et al.(Prausnitz 等《流体相平衡的分子热力学》)在相平衡与混合模型中与该类近似模型相关联。
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