Critical Behavior of the Density of Binary Liquid Mixture Cyclohexane โ Phenol
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Date
2015-04-21
Authors
Hussien, Ghadeer
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Abstract
The dynamic shear viscosity coefficients of the binary liquid mixture cyclohexane - phenol for different temperatures and concentrations are measured using glass capillary viscometer. Dynamic shear viscosity anomaly is observed near the critical temperature ๐๐ = 17.0โ and the critical concentration ๐ฅ๐ = 2.70% by weight of phenol. Mode Coupling Theory is used to fit our experimental data above the critical temperature. It is found that the value of noncritical part of the dynamic shear viscosity ๐0 = 0.8174 cP. The power law isexpected for the mass density above critical temperature. The value of noncritical part of the mass density is found to be ๐0 = 0.7357 gm cm3 . The critical isobaric thermal expansion coefficient ฮฑp๐ was calculated to be 2.07x10-6 0C-1. The critical isobaric specific heat cp was found to be 106.6 J/kg.K, Joule`s constant.Jouleโฒsconstant was found 4.11180 Calori/joule and pressure derivation of the critical temperature Tcโฒwas also calculated to 1.22x10-4 K/Pa.