Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

ABSTRACT

The densities and viscosities were measured for binary mixtures of 0.01 M aqueous tetramethylammonium bromide (TMAB) and tetraethylammonium bromide (TEAB) and ternary mixtures of glycine, DL-alanine and DL-valine(0.01 to 0.05 M) in 0.01 M-aqueous tetran- alkylammonium bromides at T= (298.15,303.15,308.15, and 313.15) K and at atmospheric pressure. The apparent molar volume, less thanPv. was computed using the density data. The limiting apparent molar volume, less thanp~of amino acids and the slope, S~were obtained using the Masson's equation. The transfer volume, less thanp~(tr) of the amino acids and their side-chain contribution, less thanp~(R) have also been determined. The viscosity data have been analyzed on the basis of the Jones-Dole equation, the viscosity A and B-coefficients and free energy of activation of viscous flow, per mole of solvent, !J.J1~