The Electrical Conductivity of [Ni(Phen)3]Cl2 in Methanol-Water Mixtures at 298 K

Abstract

The aim of this work is to measure the electrical conductivity of [Ni(Phen)3]Cl2 in
different percentages of methanol-water mixtures at 298 K. The data were analyzed using Lee-
Wheaton equation for unsymmetrical electrolytes. The conductivity parameters, ionic
conductivity o
Ni2 λ + , association constant KA and the distance parameter R are calculated at the
best fit values of the standard deviation σs (Λ). The results indicate that o
Ni2 λ + decrease on
increasing percentage of methanol in the mixture. Maximum association obtained at equal
percentage of H2O and methanol (50:50). The distance parameter was almost 29 A° at each
percentage forming solvent-separated ion pairs. Walden-product is also calculated for this
system.