Журнал химических наук

Determination of Thermodynamic Parameters of VOSO4 in Different Organic Mixed Solvents.

Abstract

Esam A Gomaa and Radwa Tarek Rashad

The measurements of vanadyl sulfate conductance have been in mixed solvent with methanol-H2O (MeOH-H2O), and N, N- Dimethyl formamide (DMF-H2O) in different mass fraction 10%, 30% and 50% at four different temperatures from 298.15 to 313.15K. The experimental data have been analyzed by using the Fuoss-Shedlovsky extrapolation technique. Estimated thermodynamic parameters for association were calculated and discussed. These parameters such as molar conductance (Λm), limiting molar conductance (Λ0), Walden product (Λ0 η0), ionpair association constant (KA), the activation energy for the transport process (Ea) and the standard thermodynamic parameters for association (ΔGoA, ΔHoA and ΔSoA). The different thermodynamic parameters for Vanadyl sulfate were estimated and compared the result of organic solvent over wide range of temperature.