Abstract
The electrical behavior of association phenomena of tetra aqua (1,10 _ phenanthroline) zinc(II) chloride in methanol-water mixture have been investigated by precise conductance measurements at 288.15 - 308.15K which can give informations about ion-ion and ion-solvent interactions in solution. The limiting molar conductance λM2+ , the association constant KA and R the main distance between ions in solution as a results of those interactions can be calculated. Thermodynamics parameters (∆H, ∆G, ∆S) of the association processes and the coulombic forces which play an important role in the association process have been studied also.