Conductance And Ion-Association Studies Of Lipic In PCTHF At Different Mixtures

Abstract Conductance of Li-Picrate was measured in different temperatures 250C 350C 450C. The limiting equivalent conductance 26615480 and the ion-association constant KA for Li-Picrate in PCTHF solvents at different percentage were evaluated using Debye-Huckel Onsager equation. It is observed that the limiting equivalent conductance increased linearly with the increase in temperature and the association constant values decreased with rise in temperature. Thermodynamic parameters i.e 2661508G0 2661508H0 2661508S0 are estimated from the temperature dependence of the ion-association constant . The positive values of 2661508S0 and positive values of 2661508 H0 indicate the ion-association process occurred spontaneously as well as endothermic at all respective temperature. Supported by absorbance data from this primary study it may be concluded that room temperature solubility of Li-Picrate in mixed PCTHF solvents at different percentage is higher than the higher temperatures. Conductivity data helps us to concluded that if we go from room temperature to higher temperature conductance increases for Li-Picrate in PCTHF solvents at different percentage. It is due to the switch over of ion-pair to ionic dissociation of Li-Picrate salt.