Excess Parameters of Binary Mixtures of Nitrobenzene-Dimethyl Sulphoxide (Nb-Dmso)

Abstract

 Orjiocha, Samuel Ibezim, Ibezim-Ezeani, Millicent Uzoamaka, Abugu, Hillary Onyeka, Ogbodo, John Onyebuchi, Akor Joseph, Nwanya, Assumpta Chinwe, and Horsfall Micheal

Recently there is an increased quest for alternative forms of electrolytes outside the conventional acid-based electrolytes in battery cell technology because of the health, environmental and cost, implications of acid.

The present study explored the possibility of using organic solvent as an alternative electrolyte in battery cell technology by studying those excess parameters which are related to the liquid mixtures of nitrobenzenedimethyl sulphoxide with a mandate to determine the intensity of the molecular interactions of the binary mixed system. The viscosities, densities, conductivity and pH of the binary solvent were determined using the percentage composition of 0 to 100 % at the following temperature range, 298.15, 303.15, 318.15, 328.15, and 338.15K respectively. Other parameters such as the molar volume (????m), excess molar volumes (????m ????), excess viscosity (???? E ), excess Gibbs’ free energy of activation of viscous flow (????∗ E ) and GrunbergNissan interaction parameters (d), were determined using the experimental values of the density and viscosity. For the molecular interaction of the mixtures studied, the deviations from the parameters in the composition of the binary mixture and temperature were also investigated. There was a decrease in the pH and an increase in the viscosity and density of the results obtained from the experiment as the system temperature and the mole fractions of nitrobenzene increased. The excess parameters were all negative values indicating the dominance of dipole-dipole interactions within nitrobenzenedimethyl sulphoxide solvent mixture. The investigation indicated that the solvent mixture behaviors support the need to use the solvents as an alternative electrolyte in battery cell technology