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Title: Excess volume, viscosity and compressibility of binary mixtures consisting of o-chlorophenol, o-cresol and m-cresol with n-n-diethyl acetamide at different temperatures
Authors: Rao, T Satyanarayana
Veeraiah, N
Rambabu, C
Issue Date: Dec-2002
Publisher: NISCAIR-CSIR, India
Abstract: The densities, viscosities and ultrasonic velocities of binary mixtures of o-chlorophenol, o-cresol, m-cresol with N, N-diethyl acetamide have been determined at 308.15, 313.15, 318.15, 323.15 K over the whole composition-range, using density bottle, ostwald viscometer, and with single crystal ultrasonic pulse echo-interferometer respectively. These data have been utilized to estimate the excess volume (VE), excess viscosity (ηE) excess compressibility (KSE), excess intermolecular free-length, and Grunberg and Nissan parameter d. Values of VE for o-chlorophenol + N,N-diethyl acetamide system and m-cresol + N,N-diethyl acetamide system are negative at all temperatures but, for o-cresol + N-N diethyl acetamide VE values are positive at lower mole fraction of o-cresol and increase with increase in temperature. ηE values are positive for all the systems and the magnitude of ηE decreases with increase of temperature in all cases. KSE values are negative for all the systems over the whole composition -range. Analysis of these suggests the absence of any strong specific interactions.
Page(s): 850-856
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.40(12) [December 2002]

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