Effect of pH on Benzoic Acid Solubilization and Its Partition in Water-Benzene Solvents

Abstract

The solubility of substance depends on solute-solvent interaction, pH, temperature and its dissociation in ionic form etc., where the partitioning of solute between two immiscible liquid solvents is observed. Herein, we have reported the benzoic acid (solute) solubility as well as its partition study between hydrophilic water and in hydrophobic benzene, which are used as solvents at room temperature (25°C). The distribution of solute benzoic acid between these two solvents is analyzed by applying of shake-flask and titrimetric method with there equilibrium concentration as by acid-base titration method. The solubility of salt benzoic acid and their partition into water and benzene-buffer solutions have been studied at different pH range (4.0, 7.0 and 9.0) as well.