When this work was commenced, very few data on the conductivities of mixtures of electrolytes were available. During the time the experiments were being performed, or since their completion, contributions by Stearn (8) and by Ruby and Kawai (7) appeared.Our experiments involved the determination of the electrical conductivities at 25°C. of solutions of potassium chloride, sodium chloride, and SUMMARY 1. The electrical conductivities, densities, and viscosities have been determined at 25°C. for solutions of potassium, sodium, and lithium chlorides in water and in one-tenth molar hydrochloric acid. The weight concentrations of the alkali metal chlorides were varied between about 0.1 M and upper limits of 3.8 to 5.8 M.2. The dependence of the equivalent conductivity-viscosity product on the concentration of the alkali metal chloride, dissolved either in water or in 0.1 M hydrochloric acid, is discussed in the light of the views of Bernal and Fowler on the nature of the viscosity of electrolytic solutions.The junior author wishes to acknowledge with gratitude the grant given him by the Department of Scientific and Industrial Research while he was a student in training.
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