Study of Molecular Interionic interactions of Ammonium Magnessium Sulphate in 50 % DMSO –water System at different temperature.

Thermodynamic or conductance studies are one of the most important tools to study the solute-solvent interactions and the effects of solute on the structure of solvent. The best understanding of these effects can be attained from the knowledge of transport number, dissociation constants, limiting equivalent conductance, degree of association or dissociation, Walden products and activity coefficients of the electrolyte solutions. Density, viscosity were measured for Ammonium Magnesium Sulphate in 50 % DMSO-water medium at temperature 308.15 and 313.15 K. The densities (ρ) of the solvent and solutions were measured by using a bicapillary pycnometer having a bulb capacity of 10 ml at various temperatures. The viscosities of the solution were evaluated by measuring flow time of solution using an Ubbelohde suspended-level viscometer, calibrated with double distilled demineralised water.[1] Molar volume and apparent molar volume (ϕoV) have been calculated from density measurement and their concentration dependence are discussed. The related thermodynamic parameters such as apparent molar volume, limiting apparent molar volume, Jones dole A and B coefficient of Ammonium Magnesium Sulphate in 50 % DMSO have been applied as a way to study different interactions. By using density and viscosity data structural interactions like solute-solute, solute-solvent have received vital importance in physical chemistry. The apparent and partial molar volume provides usefull information about various types of interactions occurring in solution. These studies are of great help in characterizing the structure and properties of solution Knowledge of ion-solvent interactions in aqueous and non aqueous media is considerable fundamental and technological importance.[2] The parameters obtained by Masson equation and Jones-Dole equation are limiting apparent molar volume (ϕoV) and their associated constant (Sv), viscosity A and B coefficient of Jones – Dole equation. The results show strong solute-solvent interactions at higher temperature 313.15 k.