The dynamic viscosity was measured for water-phenol binary mixture at several concentrations and temperatures
to determine the critical concentration and critical temperature. The critical concentration was determined at XC=3.90%
by weight of phenol, the critical temperature was TC=67.0°C using the viscosity measurement while TC=67.8°C from
an indication of electrical conductivity measurements. The electrical conductivity measurements were recorded for
water-phenol binary mixture at different temperatures and concentrations. The electrical conductivity measurements
for various concentrations (0.00%, 10.17%, 20.80% and 50.00%) by weight of phenol were fitted by using Arhenius
equation. The activation energy and the electrical conductivity at infinite temperature were calculated for several
concentrations. The electrical conductivity as a function of temperature was fitted by using power law above the
critical temperature. The noncritical part of the measured electrical conductivity was found to be 30.26 μS/cm and the
critical exponent value was 0.0321. The molar electrical conductivity was calculated and plotted by using Walden rule.
The slope of Walden plot was found to be 0.9439 so the water – phenol mixture was classified as a poor ionic mixture

Title

Material Science and Engineering

Publisher

Omics

Publisher Country

United States of America

Publication Type

Both (Printed and Online)

Volume

5

Year

2016

Pages

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