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IJC-A Vol.48A(08) [August 2009] >


Title: Densities, speeds of sound and viscosities of L-alanine in aqueous fructose, maltose and lactose solutions at different temperatures
Authors: Pal, Amalendu
Chauhan, Nalin
Keywords: Solution chemistry
Density
Viscosity
Amino acids
Issue Date: Aug-2009
Publisher: CSIR
Abstract: Density, speed of sound and viscosity measurements have been made for L-alanine (0.02 - 0.20 mol kg-1) in aqueous fructose, maltose and lactose solutions, ranging from pure water to 25 mass % of saccharides at 288.15, 298.15 and 308.15 K. These measurements have been used to evaluate some important parameters, viz., apparent molar volume, limiting apparent molar volume, transfer volume, viscosity B-coefficients of Jones-Dole equation, transfer B-coefficients, apparent molar adiabatic compressibility, limiting apparent molar adiabatic compressibility and its transfer values at infinite dilution. The activation free energy in different saccharide solutions have been calculated from B-coefficients and partial molar volume data. Hydration number and interaction coefficients have also been calculated from these data. These parameters have been discussed in terms of solute-solvent interactions.
Page(s): 1069-1077
ISSN: 0975-0975 (Online); 0376-4710 (Print)
Source:IJC-A Vol.48A(08) [August 2009]

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