Titrimetric Study of Solubility of Solute Benzoic Acid and Their Partition in Water and Benzene Solvents

Abstract

The solubility and distribution coefficient (K) of solute in solvent is depends on temperature and solute-solvent interaction, where the solute is partitioned between two immiscible solvents phase and dissociated into ionic form. Here, we have reported the titrimetric study for solubility and partition or distribution coefficient of benzoic acid (solute) in aqueous water and in organic benzene which are using as solvents. The benzoic acid solubility (in g/100g of solvent) in water and in benzene solutions have determined by titrimetrically. There is partitioning and concentration of such acid in these solvent phase by shake-flask and acid-base titration method as well. The benzoic acid solubility and their distribution between water and benzene as in different pH buffer solutions have been analyzed at room temperature (25°C) in acidic, neutral and basic (pH 4.0, 7.0 and 9.0) medium, respectively.

Phenolphthalein Indicator in Titrimetric Estimation of Benzoic Acid Solubility and Distribution in Water and Benzene-Buffer Solutions

“…In between gram/100gram of solvent the solubility of benzoic acid in an using solvent and in buffer solutions of different pH is being plotted in graphically. In graph method, the benzoic acid solubility and the pH effect has been studied already [20].…”

Gibbs Free Energy Change (∆G) in Aqueous Dissociation of Benzoic Acid at Temperature ‘K’: A Thermodynamic Study

“…Indeed, the each solute substances having a specific solubility or dissociation into a given solvent, which is depends on various factors such as pressure, temperature, intermolecular forces, bonding and polarity of substances etc [1][2][3]. A slightly changing is appears due to solutesolvent interactions when by addition of small amount of solute into water like solvent, then it trying to dissolve in it and get ionizes with their ionic strength in respect of temperature [4][5][6][7][8].…”