Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (5): 702.

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Prediction for Partial Molar Volumes in Mixed Electrolyte Aqueous Solutions by Pitzer Theory

SHENTU Yan-Ming, LI Yi-Gui   

  1. Department of Chemical Engineering, Tsinghua University, Beijing, 100084
  • Received:1992-03-27 Revised:1993-03-26 Online:1993-05-24 Published:1993-05-24

Abstract: The partial molar volumes of mixed electrolyte aqueous solutions are calculated by using Pitzer theory, and the predicting equations were established.The partial molar volumes for HNOs-UO2(NO3)2-H2O, KCl-Na2SO4-H2O, NaCl-Na2SO4-H2O, NaCl-CaCl2-H2O, KCl-CaCl2-H2O, KC1-MgCl2-H2O, KCl-NaBr-H2Osystems are estimated by using new Pitzer single and mixed parameters of apparent molar volumes, and compared with the partial molar volumes calculated from experimental densities.This paper establishes a new method for predicting the partial molar volumes of mixed electrolyte aqueous solutions.

Key words: Electrolyte aqueous solution, Pitzer theory, Partial molar volume

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