کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9626007 | 460740 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermodynamic properties of the system NH4NO3Â +Â (NH4)2SO4Â +Â H2O at 298.15Â K
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Thermodynamic properties of the system NH4NO3Â +Â (NH4)2SO4Â +Â H2O at 298.15Â K Thermodynamic properties of the system NH4NO3Â +Â (NH4)2SO4Â +Â H2O at 298.15Â K](/preview/png/9626007.png)
چکیده انگلیسی
In this investigation, the mixed aqueous electrolyte system of nitrate and sulfate with common ammonium cation has been studied with the hygrometric method at the temperature 298.15 K. The water activities of the system [yNH4NO3 + (1 â y)(NH4)2SO4](aq) are measured at total molalities from 0.4 mol kgâ1 up to saturation for different ionic-strength fractions y of NH4NO3 with y = 0.2, 0.5 and 0.8. The obtained data allow the deduction of osmotic coefficients. The experimental results are compared with the predictions of the Zdanovskii-Stokes-Robinson (ZSR), Leitzke and Stoughton (LSII), Kusik and Meissner (KM), and Pitzer models. From these measurements, new Pitzer mixing ionic parameters are determined and used to predict the solute activity coefficients in the mixture. The obtained results are used to calculate the excess Gibbs energy at total molalities for different ionic-strength fractions y.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 230, Issues 1â2, March 2005, Pages 29-35
Journal: Fluid Phase Equilibria - Volume 230, Issues 1â2, March 2005, Pages 29-35
نویسندگان
Mohamed El Guendouzi, Abdelkebir Errougui,