The correlation of activity coefficients for the electrolyte-nonelectrolyte mixed solutions and prediction of solubilities II: The thermodynamics of the liquid-solid phase equilibria of NH3-NaCl-Na2SO4-H2O system

Acta Chimica Sinica ›› 1988, Vol. 46 ›› Issue (9): 854-861. Previous Articles Next Articles

Original Articles

电解质-非电解质混合溶液活度系数的关联及溶解的推算 II:NH3-NaCl-Na2SO4-H2O体系的液固平衡热力学

吕秉玲

大连理工大学化工学院

发布日期:1988-09-15

The correlation of activity coefficients for the electrolyte-nonelectrolyte mixed solutions and prediction of solubilities II: The thermodynamics of the liquid-solid phase equilibria of NH3-NaCl-Na2SO4-H2O system

LU BINGLING

Published:1988-09-15

Abstract

In the title system, Na2SO4 is an asym. electrolyte. The activity coefficient equations derived earlier cannot be applied. Moreover, Na2SO4 can crystallize as a decahydrate. In the evaluation of the hydrate activity it is necessary to consider the activity coefficient of H2O. Generalized equations are proposed for calculating the activity coefficients of each component in these electrolyte-nonelectrolyte mixed aqueous solns. The interaction parameters were calculated by numerical regression from the experimental data. Solubilities of each solute are predicted.

Key words: WATER, CALCULATION, SOLUBILITY, CONCENTRATION, AMMONIA, ACTIVITY, ELECTROLYTE, SODIUM CHLORIDE, SODIUM SULFATE, NON ELECTROLYTE

CLC Number:

O642

Cite this article

LU BINGLING. The correlation of activity coefficients for the electrolyte-nonelectrolyte mixed solutions and prediction of solubilities II: The thermodynamics of the liquid-solid phase equilibria of NH3-NaCl-Na2SO4-H2O system[J]. Acta Chimica Sinica, 1988, 46(9): 854-861.

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电解质-非电解质混合溶液活度系数的关联及溶解的推算 II:NH3-NaCl-Na2SO4-H2O体系的液固平衡热力学

The correlation of activity coefficients for the electrolyte-nonelectrolyte mixed solutions and prediction of solubilities II: The thermodynamics of the liquid-solid phase equilibria of NH3-NaCl-Na2SO4-H2O system

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