%0 Journal Article %T The Association and Formation Constants for CuCl2 Stoichiometric Complexes with (E)-3-(2-Benzylidene Hydrazinyl)-3-oxo-N-(thiazol-2-yl)Propanamide in Absolute Ethanol Solution at 294.15 K %J American Journal of Chemistry %@ 2165-8781 %D 2012 %I %R 10.5923/j.chemistry.20120202.05 %X The association constants and Gibbs free energies for CuCl2 with (E)-3-(2-benzylidene hydrazinyl)-3-oxo-N-(thiazol-2-yl)propanamide (H2BH) had been calculated by using the conductometric titration curves in absolute ethanol at 294.15 K. New equation was applied to determine the association constant for 1:2 asymmetric salts. Different stoichiometric complexes were obtained on drawing the relation between (/\m) and (M:L). The association free energies that were evaluated for CuCl2-ligand complexes were small and spontaneous indicating electrostatic attraction force. The formation constants and Gibbs free energies of different complexes follow that order: Kf (2:1) Kf (1:1) Kf (1:2) for (M:L), and ¦¤Gf (2:1) ¦¤Gf (1:1) ¦¤Gf (1:2) for (M:L). %K Association Constants %K Formation Constants %K Gibbs Free Energies %K Stoichiometric Complexes %K Copper Chloride %K Benzylidene Hydazinyl Propanamide %U http://article.sapub.org/10.5923.j.chemistry.20120202.05.html