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IJPAP Vol.46(03) [March 2008] >


Title: Study of molecular interactions in binary liquid mixtures
Authors: Kumar, R
Jayakumar, S
Kannappan, V
Keywords: Binary mixtures
Free length of interaction
Dipole–induced dipole interaction
Issue Date: Mar-2008
Publisher: CSIR
Abstract: The acoustical parameters for two binary liquid mixtures namely, acetone – carbon tetrachloride (CCl₄) and acetone – benzene have been determined at three different temperatures. The acoustical parameters such as the adiabatic compressibility , the free length of interaction Lf, interaction parameter , Lennard Jones Potential (LJP) and also excess parameters such as excess velocity uE, excess compressibility E, excess volume VfE and excess free length LfE are computed for the two systems at 303K, 308K and 313K from the measured ultrasonic velocity and density values. The extent of interactions existing between component molecules has been found out. In acetone – CCl₄ system, the interaction parameter values have been out to be negative suggesting the presence of weak dipole –induced dipole interactions in this system. However, in acetone – benzene system, there are strong dipole - induced dipole interactions. With increase in temperature, the extent of interaction becomes weak in both the systems due to thermal agitation of the component molecules.
Page(s): 169-175
ISSN: 0019-5596
Source:IJPAP Vol.46(03) [March 2008]

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