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化学学报
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化学学报 ›› 1988, Vol. 46 ›› Issue (9): 854-861. 上一篇    下一篇

研究论文

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   

  1. 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

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718

被引次数

12

由于在研究的体系中, Na2SO4是非对称电解质, 且能生成水合盐, 故推导了由非对称型电解质与非电解质所构成的混合溶液的各组分的活度系数关联通式, 并在此基础上讨论了水合盐液固平衡的计算方法.

关键词: 水, 计算, 溶解度, 浓度, 氨, 活度, 电解质, 氯化钠, 硫酸钠, 非电解质

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

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