Effect of Viscosity on Ionic Mobilities

Abstract

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.

References

  1. 1

    Swearingen, J. Phys. Chem., 32, 785 (1928).

  2. 2

    MacInnes and Shedlovsky, J. Amer. Chem. Soc., 54, 1429 (1932).

  3. 3

    Davies, Phil. Mag., 4, 249 (1927), and “The Conductivity of Solutions” (1933), p. 141.

  4. 4

    Green, J. Chem. Soc., 93, 2023 (1908).

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BELCHER, D. Effect of Viscosity on Ionic Mobilities. Nature 140, 810 (1937). https://doi.org/10.1038/140810a0

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