Abstract
The electroconductivity of calcium oxide-ethylene glycol (EG) and calcium oxide-EG-water systems is measured in wide ranges of temperatures and compositions. With increasing temperature, the conductivity of the former system passes through a maximum, which shifts to lower temperatures with increasing electrolyte concentration. Thermodynamic characteristics of the calcium hydroxy glycolate association in EG are estimated using the Lee-Wheaton equation. The conductivity of the latter system decreases with increasing EG content. Its dependence on the limiting high-frequency conductivity of the mixed solvent is analyzed. The activation energy for conduction in both systems decreases with increasing temperature and electrolyte concentration.
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