Isopiestic Investigation of the Osmotic and Activity Coefficients of Aqueous MgSO4 and the Solubility of MgSO4·7H2O(cr) at 298.15 K: Thermodynamic Properties of the MgSO4 + H2O System to 440 K
作者： Donald G. Archer , Joseph A. Rard
DOI: 10.1021/JE980047O
关键词: Binary system 、 Osmotic coefficient 、 Thermodynamics 、 Aqueous solution 、 Chemistry 、 Activity coefficient 、 Chemical equilibrium 、 Kieserite 、 Solubility 、 Epsomite
摘要: Isopiestic determinations of the osmotic coefficient MgSO4(aq) against NaCl(aq) and KCl(aq) reference standards were performed with long equilibration times ranging to 98 days. A value 298.15 K solubility epsomite, MgSO4·7H2O(cr), was also determined. The new measurements combined previous thermodynamic determine properties MgSO4 + H2O system from ice-freezing line 440 K. fitted two different models, an ion-interaction model a chemical-equilibrium model. ability models represent this examined.
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