Structural study of aqueous solutions of tetrahydrofuran and acetone mixtures using dielectric relaxation technique
Tóm tắt
The complex permittivity, static dielectric constant and relaxation time for tetrahydrofuran-water and acetone-water mixtures have been determined at 0°, 10°, 25° and 35°C using time domain reflectometry technique (TDR). The behaviour of relaxation time of the mixture shows a maxima for the mixture with 30% of water by volume. This suggests that the tendency to form cluster between water and solute molecule is maximum for this mixture. The excess permittivity for both tetrahydrofuran-water mixture and acetone-water mixtures, are found to be negative. The Kirkwood correlation factor has been determined at various concentrations of water. Static dielectric constant for the mixtures have been fitted well with the modified Bruggeman model. The values of the Bruggeman parametera for tetrahydrofuran is found to be more than the corresponding value for acetone.
Từ khóa
Tài liệu tham khảo
S M Puranik, A C Kumbharkhane and S C Mehrotra,J. Chem. Soc. Faraday Trans. 88, 433 (1992)
A C Kumbharkhane, S M Puranik and S C Mehrotra,J. Solution Chem. 22, 219 (1993)
S M Puranik, A C Kumbharkhane and S C Mehrotra,J. Mol. Liquids 50, 143 (1991)
A C Kumbharkhane, S N Helambe, S Doraiswamy and S C MehrotraJ. Chem. Phys. 99, 2405 (1993)
S N Helambe, M P Lokhande, A C Kumbharkhane, S C Mehrotra and S Doraiswamy,Pramana — J. Phys. 44, 405 (1995)
U Kaatze, R Pottel and M Schafer,J. Phys. Chem. 93, 5623 (1989)
R Ludwig and M D Zeidler,J. Mol. Liquids 54, 181 (1992)
R H Cole, J G Berbarian, S Mashimo, G Chryssikos, A Burns and E Tomari,J. Appl. Phys. 66, 793 (1989)
S M Puranik, A C Kumbharkhane and S C Mehrotra,J. Microwave Power Electromagn. Energy 26, 196 (1991)
J Mazurkiewicz and P Tomasik,J. Phys. Organic Chem. 3, 493 (1990)
T M Aminabhavi and B Gopalkrishna,J. Chem. Eng. Data 40, 856 (1995)
J G Kirkwood,J. Chem. Phys. 7, 911 (1939)
R H Cole,J. Chem. Phys. 27, 33 (1957)
J B Hasted, inAqueous dielectric (Chapman and Hall, London, 1973)
G J Janz and R P T Tomkins,Non-aqueous electrolytes Handbook (Academic Press, New York, 1972) vol. 1
Handbook of Chemistry and Physics, 64th edn. (CRC Press, Florida, 1983)
D A G Bruggeman,Ann. Phys. (Leipzig)5, 636 (1935)
U Kaatze,Z. Phys. Chem. 153, 141 (1987)
A Chandra and B Bagchi,J. Phys. Chem. 95, 2529 (1991)
D Wei and G N Patey,J. Chem. Phys. 94, 6785 (1991)