Activity Coefficient Determination of the Ternary System: NH4NO3+ Fructose+ H2O by Potentiometric Method
محل انتشار: بیست و یکمین کنفرانس شیمی فیزیک انجمن شیمی ایران
سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 404
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شناسه ملی سند علمی:
ISPTC21_242
تاریخ نمایه سازی: 30 دی 1397
چکیده مقاله:
This research focuses on the the modeling of activity coefficients and some thermodynamicproperties of the ternary NH4NO3+Fructose+ water at 298.15 °K using the electromotive force(emf) measurements and the cell was without junction. Electrochemical cell with an ammoniumion selective electrode (NH4–ISE) versus a nitrate ion selective electrode (NO3–ISE) as areference electrode was used to determine the activity coefficients for NH4NO3– monosaccharide(Fructose) systems in water at 298.15 °K. Pitzer and modified Pitzer ion-interaction model hasbeen used for correlating the data and some thermodynamic results were achieved. A comparisonof the results with similar systems of references shown that agreement is excellent. The Gibbsfree energy of transfer from water to mixed solvent for NH4NO3 were evaluated together withthe model parameters.The results of optimization by Pitzer model were meaningful andsupplementing the correlation using the modified ion-interaction model of Pitzer has led toslightly more reasonable results.
کلیدواژه ها:
نویسندگان
Vahideh Masumi
Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran
Rahman Salamat-Ahangari
Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran