| Abstract: | A principle of equivalent states for liquid transport properties is developed for binary liquid systems. Under the assumption that the activity and viscosity corrected mutual diffusion coefficient is a function of the solution molar volume, working equations are developed for the concentration dependence of the binary mutual diffusion coefficients. The results apply to binary liquid systems for which the coefficient of thermal expansion is independent of composition and for which the difference in activation free energies for viscous flow and diffusion is also independent of composition. The results are tested with available data to show that the binary mutual diffusion coefficient can be predicted from the infinitely dilute values and the solution viscosity and thermodynamics for a large number of liquid systems. |
