Abstract

P. Sahayaamutha^* And X. Rosario Rajkumar

Apparent molal volumes (jv) of three biologically important compounds [Fructose, galactose and succinic and] in water and in 0.5 mol kg-1 aqueous sodium chloride and potassium chloride solutions at 308 & 318K have been determined from density measurements using a sprengel and Ostwald pyknometer partial molar volumes (Vo2) at infinite dilution obtained from values have been used to calculate partial molar volumes of transfer Vo2,tr for the various compounds from water to aqueous sodium chloride/potassium chloride solutions. Vo2,trvalues are negative for all the three compounds studied. The Vo2,trvalues have been rationalized in terms of cosolute – water interations using a cosphere overlap hydration model.  

Apparent molalvolume; partial molar volume; transfervolume; density; cosolute- water interactions; cosphere overlap hydration model

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