Refractive Index Measurements of the Solvent– Solvent Interaction, the Polarization and the Polarizability of Some Mixed Solvents

• Farid I. El–Dossoki

  Chemistry Department, College of Arts and Sciences, Omar Al-Mukhtar University, Al-Bayda, Libya

  Author

The refractive indices and the densities of  1) portic–portic solvent mixtures (methanol–ethanol, methanol–n–porpanol, methanol–n–butanol and ethanol-H2O), 2) aprotic–aprotic solvent mixtures (acetonitrile-DMF, acetonitrile-DMSO, and acetonitrile–1,4-dioxane) and  3) aprotic–protic solvent mixtures (DMF, AN with  H2O and some aliphatic alcohols), were measured experimentally at different temperatures. 

From the values of the measured refractive indices and the densities, the excess refractive indices, the molar refractions, the atomic polarization ,the molar volumes, the solvated radii and the polarizabilities of the mentioned mixed solvents were   calculated and discussed. The results show that , the solvent–solvent interaction reach maximum value at definite mole fractions of each solvent depending on the nature of the solvent. Also the excess refractive indices, the densities and the atomic polarizations were found to be decrease as the temperature increase. In the other hand, the molar volumes, the solvated radii, the molar refractions and the polarizabilities were found to be increased as the temperature increased.

Al-Hayan, M.N.M. (2006) Densities, excess molar volumes, and refractive indices of 1,1,2,2-tetrachloroethane and 1-alkanols binary mixtures. J. Chem. Thermodynamics, 38, 427–433.

Arce, A., A. Arce Jr. and A. Soto (2005) Physical and excess properties of binary and ternary mixtures of 1,1-dimethylethoxy-butane, methanol, ethanol and water at 298.15K. Thermochimica Acta 435, 197–201

El-Dossoki, F. I. and E.A. Gomaa (2005) Excess refractive index , polarizability , polarization and the molar volume of some mixed solvents. J. Indian Chem. Soc., 82, Pp. 1-6 .

El-Dossoki, F.-I. Ph. D. Thesis, (1998) Thermodynamic And Solvation Parameters Of Some Ions, Crown Ether Compounds And Their Complexes In Some Solvents. Mansoura University, Mansoura city, Egypt.

Elizalde-Solis, O. and L.A. Galicia-Luna (2005) Solubility of thiophene in carbon dioxide and carbon dioxide + 1-propanol mixtures at temperatures from 313 to 363K. Fluid Phase Equilibria, 230, 51–57.

Hassan, A. A., S. O. Adel, and E. T. Abd. El-Salam (1998) Apparent Second-Stage Dissociation Constants of Some Zwitterionic Buffers for Biochemical and Physiological Research in Various Hydroorganic Media J. Chem. Eng. Data, 43(5), 703-707.

Hasted, J.-B. (1973) Aqueous Dielectrics; Chapman and Hall: London.

Jose L. M., A. K. Sraidi, G. Guiheneuf, A. Negro, M. J. Kamlet, R. W. Taft (1985) Studies on amphiprotic compounds. 2. Experimental determination of the hydrogen bond acceptor basicities of monomeric alcohols. J. Org. Chem., 50 (16), 2870–2873.

Liu, C., G. H. Kashappa, and H. Desai (2004) Solubility of Valdecoxib in the Presence of Ethanol and Sodium Lauryl Sulfate at (298.15, 303.15, and 308.15) K. J. Chem. Eng. Data, 49, 1847-1850.

Marcus, Y. (1999) The properties of solvents. 3rd edit. John Wiley & Sons, New York.

Mehta, S. K., A. K. Sharma, K. K. Bhasin and R. Parkash (2002) Physicochemical properties in mixtures of hexamethylphosphortriamide with 2,2,2-trichloroethanol or 2,2,2-trifluoroethanol or 1,1,1,3,3,3-hexafluoropropan-2-ol. Fluid Phase Equilibria, 201, 1, 30, 203-216.

Monge, M., D.F. Montaño, I. Bandrés, C. Lafuente and F.M. Royo (2009) Volumetric, acoustic and refractive properties at several temperatures of dibutyl ether + 1-chlorobutane system. J. of Molecular Liquids, 150, 1-3, 15, Pp.73-76.

Moody, G. J. and J. D. R. Thomas (1971) Dipole Moments in Inorganic Chemistry. 3th Edition, Edward Arnold: London.

Ottani, S., D. Vitalini, F. Comelli and C. Castellari (2002) Densities, Viscosities, and Refractive Indices of Poly(ethylene glycol) 200 and 400 + Cyclic Ethers at 303.15 K. J. Chem. Eng. Data, 47(5), 1197-1204.

• PDF

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Copyright of the articles Published by Almukhtar Journal of Science (MJSc) is retained by the author(s), who grant MJSc a license to publish the article. Authors also grant any third party the right to use the article freely as long as its integrity is maintained and its original authors and cite MJSc as the original publisher. Also, they accept the article remains published by the MJSc website (except in the occasion of a retraction of the article).