Jiang Yucheng

Thermodynamic parameters of the interaction of CsCl with monosaccharide (d-glucose, d-galactose, d-xylose, and d-arabinose) in water at

Abstract A non-liquid-junction electrochemical cell composed of a potassium ion selective electrode(K-ISE) against a chloride ion selective electrode (Cl-ISE) as a reference electrode was employed to study the thermodynamic parameters of weak interactions between aqueous cesium chloride and the monosaccharides ( d -glucose, d -galactose, d -xylose, and d -arabinose) at T=298.15 K . Activity coefficients for this system obtained from electromotive force measurements indicate that they have a close relationship with the stereostructure of the saccharide. The Gibbs free energy pair interaction parameters and salting constants were also evaluated; these can characterize the interaction between the saccharides and CsCl in water. The results were interpreted on the basis of a model of structural and electrostatic interaction and the hydration effect of the hydroxyl ion of these saccharides.