Thermodynamic and transport properties of aqueous trisodium citrate system at 298.15 K

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• 作者：Salabat ; Alireza ; Shamshiri ; Lila ; Sahrakar ; Forozan
• 关键词：Trisodium citrate ; Density ; Viscosity ; Refractive index ; Water activity
• 刊名：Journal of Molecular Liquids
• 出版年：2005
• 期刊代码：61_01677322
• 类别：ch
• 出版时间：April 15, 2005
• 卷：118
• 期：1-3
• 页码：67-70
• 文件大小：171 K

摘要

In this work, we report density, viscosity, refractive index and water activity data for the aqueous trisodium citrate (C₆H₅Na₃O₇) system at 298.15 K. The parameters of the Pitzer ion-interaction model are evaluated from isopiestic water activity data. The apparent molar volume at infinite dilution was calculated from density data and a new value for the conventional partial molar volume of citrate ion (Citp>3−p>) was derived. The experimental viscosity data have been fitted to the Kumar equation. Using this equation, the hydration number (h) and ion–solvent interaction parameter (B) for trisodium citrate were obtained.