کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9633609 | 1426351 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hygrometric determination of water activities, and osmotic and activity coefficients of NH4Cl-CaCl2-H2O at TÂ =Â 298.15 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: Hygrometric determination of water activities, and osmotic and activity coefficients of NH4Cl-CaCl2-H2O at TÂ =Â 298.15 K Hygrometric determination of water activities, and osmotic and activity coefficients of NH4Cl-CaCl2-H2O at TÂ =Â 298.15 K](/preview/png/9633609.png)
چکیده انگلیسی
The water activities of aqueous electrolyte mixture NH4Cl-CaCl2-H2O were experimentally determined at T = 298.15 K by the hygrometric method at total ionic-strength from (0.6 to 9) mol · kgâ1 for different ionic-strength fractions y of NH4Cl with y = 1/3, 1/2, and 2/3. The data allow the deduction of new osmotic coefficients. The results obtained were correlated by Pitzer's model and our proposed mixing rule ECA (extended composed additivity) for calculations of water activity in mixed aqueous electrolytes. From these measurements, the Pitzer mixing ionic parameters are estimated and used to predict the solute activity coefficients in the mixture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 37, Issue 3, March 2005, Pages 259-265
Journal: The Journal of Chemical Thermodynamics - Volume 37, Issue 3, March 2005, Pages 259-265
نویسندگان
Abderrahim Dinane, Abdelfetah Mounir,