Electrical conductance, density and viscosity fo molten lead dodecanoate/lead acetate mixtures

Abstract

Data are presented for the densities, electrical conductances and viscosities of the system lead dodecanoate/lead acetate. The molar volumes are linear functions of composition. The Arrhenius plots for the conductance of the mixtures show curvature. Activation energies for conductance in the low temperature region are independent of composition and similar to that of pure lead dodecanoate, suggesting that the major charge carrier is the same i.e. Pb2+ ions. The observed increase in the conductance of the mixtures with increasing concentration of lead acetate is probably due to an increase in the Pb2+ concentration.The activation energies for viscous flow in the mixtures are similar to that of pure lead dodecanoate. Evidence is presented to show that the size of the unit of viscous flow in the mixtures is the same as in the pure soap.