Critical Solution-Temperature Phenomena in the Ternary System Phenol-Thymol-Water

Wilcox, K. W.; Bailey, Charles Reynolds

doi:10.1021/j150299a007

Cited by 4 publications

(3 citation statements)

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“…The critical concentration is determined at 33.90% by weight of phenol and the critical temperature was 67.0°C from the dynamic viscosity measurements and from the electrical conductivity measurements it showed that the critical temperature 67.8°C. between their results and our results is due to the difference in the purity of the water and phenol which are used in the experiment [10].…”

Section: Resultscontrasting

confidence: 59%

“…(5) can be compared with the result of Figure 5, the value of the critical exponent constant is presented by slope of the curve which equal to 0.0321. The critical exponent χ σ υ has a good agreement with D'Arrigo and Klein values which equal 0.037 [10,11]. The intercept of the curve represented the natural logarithm of the noncritical part of the measured electrical conductivity lnσ o = 3.4098, so the value of the noncritical part equal to 30.26 µS/cm.…”

Section: Behavior Of Electrical Conductivity Above the Critical Pointsupporting

confidence: 67%

“…υ is critical exponent=0.64, χ σ υ is critical exponent=0.037 and σ 0 is the noncritical part of the measured electrical conductivity which represents the electrical conductivity at inifinite temperature [10][11][12][13][14][15][16][17].…”

Section: Behavior Of Electrical Conductivity Above the Critical Pointmentioning

confidence: 99%

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Critical Behavior of the Electrical Conductivity for the Binary Mixture of Water and Phenol

HK¹,

IR²

2016

J Material Sci Eng

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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.

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Section: Resultscontrasting

confidence: 59%

Section: Behavior Of Electrical Conductivity Above the Critical Pointsupporting

confidence: 67%