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Title: Thermodynamic and transport properties of sorbitol and mannitol in water and in mixed aqueous solutions
Authors: Banipal, T S
Sharma, S
Lark, B S
Banipal, P K
Issue Date: Nov-1999
Publisher: NISCAIR-CSIR, India
Abstract: Apparent molal volumes, apparent molal adiabatic compressibilities and viscosities of sorbitol and mannitol have been determined in water at 288.15, 298.15, 308.15 and 318.15 K and in aqueous solutions of urea and sodium chloride (0.5 m) at 298.15 K from density, sound velocity and efflux time measurements respectively. Partial molal volumes (V°2) and adiabatic compressibilities (K°s,2) at infinite dilution have been fitted to a suitable polynomial to estimate their first and second derivatives with respect to temperature. B-coefficients have been obtained using Jones-Dole equation. The activation energy for viscous flow has been estimated from the temperature dependence of viscosity. These quantities have been discussed in terms of structure-making and structure-breaking processes. Estimated transfer parameters have been rationalized in terms of the interactions between polyols (solutes) and urea or sodium chloride (cosolutes).
Page(s): 1106-1115
Appears in Collections:IJC-A Vol.38A(11) [November 1999]

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