شماره ركورد كنفرانس :
3834
عنوان مقاله :
THERMODYNAMIC STUDY OF THE TERNARY SYSTEM: KBr+MANNITOL+ H2O BY POTENTIOMETRIC METHOD
پديدآورندگان :
Ghasemi Mahsa mgh_chemist88@yahoo.com Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran; , Salamat–Ahangari Rahman Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran
كليدواژه :
Activity Coefficients , Gibss free energy of transfer , Solvation , KBr and Mannitol.
عنوان كنفرانس :
نوزدهمين سمينار شيمي فيزيك ايران
چكيده فارسي :
This research purposes on the thermodynamics modeling of the ternary KBr+Mannitol+ water at 298.15 K by electromotive force ( emf ) measurements. Electrochemical cells with a potassium ion selective electrode (K–ISE) versus a bromide ion selective electrode (Br–ISE) as a reference electrode were used to determine the activity coefficients for KBr– monosaccharide (Mannitol) systems in water at 298.15 K. Pitzer ion-interaction model has been used for correlating the data. A comparison of the results with references shown that agreement is excellent. The Gibbs free energy of transfer from water to mix solvent for KBr were evaluated together with the model parameter.
