多组分体系相图中的杠杆原理形式

doi:10.3866/PKU.DXHX201601001

University Chemistry ›› 2016, Vol. 31 ›› Issue (5): 73-77.doi: 10.3866/PKU.DXHX201601001

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The Forms of Lever Rule in the Phase Diagram of Multi-component Systems

Mei-Ju WEI,Fei-Wu CHEN*(),Xu-Qin LI,Ya-Ping YE,Wen-Xia YUAN

School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China

Published:2016-05-23
Contact: Fei-Wu CHEN E-mail:chenfeiwu@ustb.edu.cn
Supported by:
北京科技大学研究型示范教学项目;MOOC课程示范项目

Abstract

Abstract:

Two forms of the lever rule in the two-phase and three-phase regions of a multi-component system are discussed in this article. As for the two-component system, the cooling curves of solutions are explained with the lever rule in a three-phase line and the freezing point depression equation. A similar form of the lever rule is presented for three points on a line segment in a three-phase diagram region. This equation can be exploited to prepare the solution with desired concentrations of a multi-component system and to draw three-phase diagrams.

Key words: Multi-component system, Lever rule, Phase diagram, Phase equilibrium

Mei-Ju WEI,Fei-Wu CHEN,Xu-Qin LI,Ya-Ping YE,Wen-Xia YUAN. The Forms of Lever Rule in the Phase Diagram of Multi-component Systems[J].University Chemistry, 2016, 31(5): 73-77.

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The Forms of Lever Rule in the Phase Diagram of Multi-component Systems

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