VISCOSITIES, ELECTROLYTIC CONDUCTIVITIES, AND VOLUMETRIC PROPERTIES OF HCL-MCL(X)-H2O AS A FUNCTION OF TEMPERATURE UP TO HIGH MOLAL IONIC STRENGTHS

The experimental determination and analysis of densities (rho), electr olytic conductivities (kappa), and viscosities (eta) has been performe d in one of our laboratories (University of Miskolc) for the systems H a-LaCl3-H2O and HCl-M(II)Cl2-H2O where M denotes Mn, Cu, or Cd. These quantities are required, for example, for the design and control of in dustrial processes involving these ternary systems. Experimental value s were reported elsewhere. These large sets of experimental data for H a-LaCl3-H2O are now represented by empirical functions of temperature (T), the molality of HCl (m1), and the molality of LaCl3 (M2). The ran ge of these experimental variables was m1 = 0.2 to 10.0 mol kg-1, m2 = 0.2 to 4 mol kg-1, and T = 283.15 to 328.15 K. Plots are also given f or the deviations of volume, kappa, and eta from simple ideal mixing r ules at constant T for Ha-LaCl3-H2O and Ha-MCl2-H2O.