Sun, 2015-08-23 13:17 — Prof. Issam Rashid Ashqer

Research Title:

Critical Behavior of the Density of Binary Liquid Mixture Cyclohexane – Phenol
Country:

Palestine
Date:

Wed, 2015-04-22 Research 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 T_c =17.0℃ and the
critical concentration x_c=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 η_0 = 0.8174 cP. The power law is expected for
the mass density above critical temperature. The value of noncritical
part of the mass density is found to be ρ_0= 0.7357 gm/cm^3 . The
critical isobaric thermal expansion coefficient α_p c was calculated to
be 2.07x10-6 0C-1. The critical isobaric specific heat c_p 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 〖T_c〗^'
was also calculated to 1.22x10-4 K/Pa.