On the Determination of Partial Molar Volumes, Partial Molar Refractions, Mean Electronic Polarizabilities and Effective Molecular Radii from Dilute Multi-component Data alone using Response Surface Models

摘要: A quaternary system consisting of three solutes, namely ethanol, diethylene glycol (DEG) and triethylene (TEG) in benzene at 298.15 K 1.0125 × 105 Pa was studied. An experimental design the range concentration 0.006 < xsolute−i 0.023 explored, optimizing metric distance among solutes to avoid clustering. On-line simultaneous measurements using a densitometer refractometer were utilized measure bulk solution density refractive index, respectively. Response surface models describing total molar volume refraction employed determine partial volumes refractions each solute from dilute multi-component data alone. Neither densities nor indices any pure components used no binary information required for analysis. Definitions mean electronic polarizability effective molecular radius based on introduced. Subsequently, polarizabilities radii solutions, as well solvent determined. The results obtained volumes, refractions, good agreement with those independent experiments literature data.