Conductometric study of AlCl3 in anhydrous formic and acetic acids

ABSTRACT

The ionic dissociation constant and limiting molar conductance of A1C1[3] have been determined by conductometric measurements in both anhydrous formic and acetic acids. The conductometric data were analyzed according to Onsager Sheldovsky and Kraus-Bray methods at different concentrations ranging from 3.71 x 10[-3] to 1.7 x 10[-3] mol dm [-3] at different temperatures [namely 30, 35 and 40 degree]. The dissociation constants of AlCL[3] in anhydrous formic acid are larger than those obtained in anhydrous acetic acid. The dissociation constant in case of anhydrous formic acid increases with temperature but decreases in case of anhydrous acetic acid. This has been interpreted based on the dielectric constant of both formic and acetic acid solutions in non-aqueous media