IN the course of some measurements of electrolytic conductivity, I have determined the effect of increasing concentrations of phenol upon the equivalent conductance of a very dilute solution of hydrochloric acid in water at 25°. Using the viscosity data of Swearingen1, m is found to be 1·000 in the equation λ' = λFm, where λ' is the measured equivalent conductance, λ the predicted equivalent conductance in the absence of phenol, and F the relative fluidity of the phenol solution. Above 0·30 normal phenol concentration, m becomes increasingly less than 1. Stokes's law would predict m = 1. The concentration of hydrochloric acid was 10-4 normal.
Swearingen, J. Phys. Chem., 32, 785 (1928).
MacInnes and Shedlovsky, J. Amer. Chem. Soc., 54, 1429 (1932).
Davies, Phil. Mag., 4, 249 (1927), and “The Conductivity of Solutions” (1933), p. 141.
Green, J. Chem. Soc., 93, 2023 (1908).