化学平衡的本质——浅谈混合熵对化学平衡的贡献  

Intrinsity in Chemical Equilibrium——Contribution of Mixed Entropy

作　　者：刘雨昕 庞树峰 郑传明 张韫宏 Liu Yuxin;Pang Shufeng;Zheng Chuanming;Zhang Yunhong(Chemistry ＆ Chemical Engineering School,Bcijing Institute of Technology,Beijing 102488)

机构地区：[1]北京理工大学化学与化工学院(北京市房山区良乡高教园区),北京102488

出　　处：《化学通报》2018年第11期1052-1055,共4页Chemistry

摘　　要：化学平衡是物理化学的重要内容之一。化学反应的等温方程式,给出了平衡常数与标准摩尔反应Gibbs自由能的关系。然而,仅从化学反应等温方程式还很难理解混合熵对化学平衡贡献的本质。本文建立了理想气体体系Gibbs自由能与反应进度的关系,给出了三个理想气体反应体系Gibbs自由能与反应进度的具体关系,分析了混合熵对化学平衡的本质贡献。Chemical equilibrium constant can be obtained from the reaction isotherm. However,it is not easy to understand the contribution of mixed entropy to the chemical equilibrium by the reaction isotherm. An equation between Gibbs free energy and extent of reaction was obtained for ideal gas reactions. The equation was used for three ideal gas reactions. Based on them,the contribution of mixed entropy to the chemical equilibrium was analyzed.

关 键 词：化学平衡 混合熵 反应进度 标准摩尔生成Gibbs自由能 

分 类 号：O642[理学—物理化学]