Acta Phys. -Chim. Sin. ›› 1993, Vol. 9 ›› Issue (03): 411-415.doi: 10.3866/PKU.WHXB19930323

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The Activity Coefficients of HCl in Aqueous-Nonaqueous Mixtures According to the Mean Sphere Approximation

Wang Feng-Yun; Zhang Wei-Quan; Ye Jing-Xian   

  1. Department of Chemistry, Nanjing University of Science and Technology, Nanjing 210014
  • Received:1991-11-19 Revised:1992-05-25 Published:1993-06-15
  • Contact: Wang Feng-Yun


This article is a pridiction of the activity coefficients of HCl in a series of MeOH-H_2O, EtOH-H_2O, HAc-H_2O and Dioxane-H_2O mixtures by the mean sphere approximation(MSA). By comparing the results of MSA with those calculated from Pitzer's equation or from literatures in the MeOH-H_2O media, it is shown that the MSA is powerful in the aqueous-nonaqueous media although it takes the diameter of cation as the only adjustable parameter. A disscusion about the results and the diameter of H~+ in each medium is given at the end briefly.

Key words: Mean sphere approximation; Pitzers equation; Activity coefficient; HCl; Aqueous-nonaqueous media