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Composition dependence of viscosity of some binary solutions
Author(s) -
Ghai R. K.,
Dullien F. A. L.
Publication year - 1971
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450490215
Subject(s) - molality , viscometer , viscosity , thermodynamics , binary number , composition (language) , volume (thermodynamics) , chemistry , materials science , mathematics , physics , aqueous solution , philosophy , arithmetic , linguistics
Viscosities of eleven binary liquid systems, mostly regular solutions, have been measured over the entire composition ranges at 25°C. Most of the systems had not been investigated before. The procedure, the precautions observed for the measurement of viscosity, and the calibration of the viscometers have been discussed. Of the many empirical and semi‐empirical equations tested for their validity the McAllister equation has been found to fit best the experimental data for all the solutions. Non‐ideality of a solution, as expressed in terms of excess activation energy for viscous flow or in terms of excess molal volume, has also been briefly discussed.