Abstract
The data obtained from density (rho) and viscosity (eta) measurements is used for the determination of apparent molar volume (phi(V)), viscosity B-coefficient of L-tryptophan in aqueous solution of alkali halides at temperatures T=298.15 K- 313.15 K under atmospheric pressure. From the apparent molar volume (phi(V)) calculated from experimental density, the equation suggested by Masson is used for calculation of the limiting apparent molar volumes (phi(0)(V)) and experimental slopes (S-V*) and its values are used to interplay solute-solvent and solute-solute interactions. The free energies of activation per mole of solvent (Delta mu(0)(1)not equal) and solute (Delta mu(0)(2)not equal) were calculated. The limiting partial molar volumes of transfer and the free energies of activation per mole of both solvent (Delta mu(0)(1)not equal) and solute (Delta mu(0)(2)not equal) were analyzed constructed on the transition state theory and cosphere overlap model, respectively. The hydration number of (L)-tryptophan in aqueous solution of LiCl, NaCl and KCl was determined using phi(0)(V)and viscosity B-coefficient.