Chem. J. Chinese Universities ›› 1990, Vol. 11 ›› Issue (11): 1263.

• Articles • Previous Articles     Next Articles

Studies on Chemical Equilibrium of the Complex Reaction with the Method of Dimensionless Parameter

Zeng Xiancheng, Zhang Yuanqin, Deng Yu   

  1. Department of Chemistry, Sichuan Universtiy, Chengdu, 610064
  • Received:1989-04-19 Online:1990-11-24 Published:1990-11-24

Abstract: The method of dimensionless parameter of thermostatics for (2-1) type reversible reaction suggested in literatures was used to study the complex reaction of dibenzo-.18-crown-6 with sodium ion in DMSO-H2O mixed solvents (800/200(V/V)) at 25. 0 and 30. 0℃ respectively.The enthalpy change and equilibrium constant of the reaction were directly measured. The applicable range of the method is discussed. The basic requirement for evaluating equilibrium constant Ka with extrapolation is also proposed in this paper.

Key words: Thermostatics, Method of dimensionless parameter, Complex reaction, Crown ether, Metal ion

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