Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

ABSTRACT

Density, ?, viscosity, ?, and refractive index, nD measurements have been carried out on a-amino acids, glycine, DL-alanine, L-serine, and DL-valine (0.1 to 0.5) M in 0.2 M aqueous D-glucose solution at T = (298.15, 303.15, 308.15, and 313.15) K. These measurements have been performed to evaluate some important parameters, viz, apparent molar volume, limiting apparent molar volume, transfer volume, viscosity A and B-coefficients of Jones-Dole equation, variation of B with temperature, dB/dT, free energy of activation per mole of solvent and solute, respectively, and molar refractive index, RD. These parameters have been interpreted in terms of solute-solute and solute-solvent interactions and structure making/breaking ability of solutes in the given solution. In addition to this,phi, B-coefficient and u, have been split into group contributions NH3+, COO-, and CH2 of the amino acids using their linear correlation with number of carbon atoms in the alkyl chain of the amino acid