TRANSPORT-PROPERTIES OF NONELECTROLYTE LIQUID-MIXTURES .10. LIMITING MUTUAL DIFFUSION-COEFFICIENTS OF FLUORINATED BENZENES IN N-HEXANE

Mutual diffusion coefficients, D-12, have been measured for benzene, s even fluorinated benzenes, and octafluorotoluene diffusing in n-hexane at trace concentration in the temperature range 213.2-333.2 K by the chromatographic peak-broadening technique with an estimated accuracy o f +/-2.5%. These results are compared with the predictions of rough ha rd-sphere theory (RHS). The results are reproducible to within +/-10% with the translational-rotational coupling Factor equal to the value f or the solvent. The activation energy of diffusion E(D), computed from Arrhenius plots, is almost constant for these solutes.