Critical Behavior of the Density of Binary Liquid Mixture Cyclohexane – Phenol
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 𝑇𝑐 = 17.0℃ and the critical concentration 𝑥𝑐 = 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 𝜂0 = 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 𝜌0 = 0.7357 gm cm3 . The critical isobaric thermal expansion coefficient αp𝑐 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.Joule′sconstant was found 4.11180 Calori/joule and pressure derivation of the critical temperature Tc′was also calculated to 1.22x10-4 K/Pa.