The Equivalent Conductance of Electrolytes in Mixed Solvents

Abstract

Measurement of the conductance of uranyl chloride in the concentration range from 5 · 10~3 to 2 · 10~4 equivalents per liter at temperatures of 25.00, 35.00 and 45.00°C were made in pure water, and in mixtures of approximately 20, 40, 60, 80 and 97 weight per cent ethanol. The equivalent conductance at infinite dilution ( ") for each of the solvents at each temperature was obtained by graphical extrapolation of the data. The equilibrium constant (K) for the ion pair dissociation of the uranyl chloride in each solvent at each temperature was obtained from the same extrapolation of the data. In water solutions the conductance of the uranyl chloride was corrected for the conductance of the hydrogen ion at each concentration.The dependence of 0 and of upon temperature, viscosity, composition and dielectric constant are discussed.

The Equivalent Conductance of Electrolytes in Mixed Solvents

“…[2] and specifically from Eq. [5] that the numbers of ions per formula of electrolyte and the valence of the ions must be defined in order to calculate f• v, Z, F(Z), and eventually A. and K. In order to determine the numbers and the valence of the ions produced by an electrolyte in solution, an ionization scheme must be postulated. Whatever ionization scheme is selected, it must result in values of ~+, ~-, z+, and z-which, when inserted in the equations given above, will permit a computer evaluation of Ao and K. Since the Fuoss-Shedlovsky calculation (Eq.…”

“…In this note are described preliminary studies on the thermal stability of lithium, and other selected battery components with INLiC104-propylene carbonate electrolyte, a system employed by a number of groups in developing prototype batteries [see ref. (5) and ( 2) ].…”

“…Several studies have been made (1)(2)(3)(4)(5)(6)(7)(8)(9)(10) in these laboratories of the equivalent conductance of different valence types of electrolytes in various solvent compositions over a range of temperatures. Even the simple salt, potassium chloride (1), has been shown to deviate, depending on the solvent and temperature, from the requirements of the Onsager equation.…”

Activity coefficients and thermodynamics of hydrobromic acid in methanol-water mixtures and anhydrous methanol from electromotive force studies

“…),(BaF) lower than those obtained by the spectroscopic method lead to more consistent thermodynamic data. Krasnov and Karaseva (10) have also re-evaluated the dissociation energies of the Group IIA subhalides and suggest DSsHCaF) = 125 kcal. mole-1 as the most reliable value.…”