EFFECTS OF SOLVATION ON PARTITION AND DIMERIZATION OF BENZOIC ACID IN MIXED SOLVENT SYSTEMS

摘要

The partition of benzoic acid between 0.1 M perchloric acid solution and two kinds of mixed solvents has been carried out at 2S°C. The partition and dimerization constants of benzoic acid have been determined in the 1-octanol-benzene and 2-octanone-benzene systems. In both the mixed solvent systems, with increasing content of 1-octanol and 2-octanone in each mixed solvent, the partition constant of benzoic acid has been found to increase, and the dimerization constant of benzoic acid in each organic phase to decrease. These phenomena are attributable to solvation of monomeric benzoic acid by 1 -octanol and 2-octanone molecules in each mixed solvent.