四川农业大学学报 ›› 1997, Vol. 15 ›› Issue (03): 372-374,378.doi: 10.16036/j.issn.1000-2650.1997.03.017

• 研究论文 • 上一篇    下一篇

关于化学平衡常数的探讨

游承干, 顾弁如   

  1. 四川农业大学基础部, 雅安市 625014
  • 收稿日期:1997-02-28 出版日期:1997-09-30 发布日期:2017-03-07

THE RESEARCH ON THE CHEMICAL EQUILIBRIUM CONSTANT

You Chenggan, Gu Bianru   

  1. Department of Basic Sciences, Sichuan Agricultural University/Yaan, Sichuan, China 625014
  • Received:1997-02-28 Online:1997-09-30 Published:2017-03-07

摘要: 化学平衡常数的理论值KØ是无量纲的,为使理论值与其实验值统一起来,在平衡常数K的表达式中,气体只能用相对压力而不能用"浓度"表示,溶液中物质的浓度用相对浓度表示。这样通过公式△rGmØ=-RTlnKØ,既可由热力学数据求KØ值,又可以由实验所得K值求△rGmØ

关键词: 相对压力, 相对浓度, 平衡常数[31JB, 51A]

Abstract: The theoretical value of the equilibrium constant KØ is dimension-tess. In the equilibrium constant equation the relative pressure can be only used instead of "concentration" for the gas and the relative its theoretical value is equal to that laboratory value. By using the equation △rGmØ=-RTlnKØ not only the equilibrium constant can be determined from the thermodynamic data, but also △rGmØ can be calculated by the experimental value K.

Key words: RELATIVE PRESSURE, RELATIVE CONCENTRATION, EQUILIBRIUM CONSTANTS

中图分类号: 

  • O642.1