Temperature Dependence of the Electrical Resistance for Isobutyric Acid-Water near the Critical Point

Abstract

The electrical resistance of two sealed samples of critical mixtures of isobutyric acid-water have been measured in the reduced temperature ranges [$\epsilon =\frac{T-T_c)}{T_c}$] $6.7\times {10}^{-7\mathrm{}}<\epsilon <3.2\mathrm{}\times {10}^{-2\mathrm{}}$ and $3.3\times {10}^{-7\mathrm{}}<\epsilon <6.6\mathrm{}\times {10}^{-2\mathrm{}}$. Data analyses indicate that the temperature derivative of the resistance is strongly divergent as $\epsilon \to 0$.