Excess and apparent molar volumes of anionic and cationic salts in aqueous and methanolic solutions at 303.15 k

The excess and apparent molar volumes of aqueous and methanolic solutions of tetra butyl ammonium hydrogen sulphate (TBAHS) and tetra butyl ammonium chloride(TBAC) including those of the pure liquids (water and methanol) have been derived at 303.15 K over a broad range of composition using experimentally measured parameters. The derived parameters are plotted against molarities of the solutions and an attempt has been made to study the solute –solute and solute – solvent interactions involved in the system. The excess and apparent molar volume values are found to be negative for all the mixtures at the study temperature thus showing increased stability.