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Viscosity prediction through extrapolation with the congruence principle
Author(s) -
Coursey B. M.,
Heric E. L.
Publication year - 1969
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.5450470420
Subject(s) - extrapolation , congruence (geometry) , tetradecane , thermodynamics , viscosity , binary number , ternary operation , hexadecane , range (aeronautics) , mathematics , chemistry , materials science , physics , mathematical analysis , computer science , organic chemistry , geometry , arithmetic , composite material , programming language
Measured viscosities of mixtures of hexane and tetradecane are used to predict viscosities in three binary and one ternary system containing hexadecane. Predictions are based upon extrapolation, by means of the restricted congruence principle, of the excess Cibbs free energy of activation for flow. The errors in that function thereby range from 2.3 to 14.8 cal/mole for the several systems, and the corresponding errors in viscosity from 0.5 to 2.5%.