Collect. Czech. Chem. Commun.
1990, 55, 1457-1464
https://doi.org/10.1135/cccc19901457
A modification of the inert gas stripping method for measuring the limiting activity coefficient
Július Surový, Jana Ovečková and Elena Graczová
Faculty of Chemical Technology, Slovak Technical University, 812 37 Bratislava
Abstract
A modification of the inert gas stripping method for measuring the limiting activity coefficient is proposed. Compared to the procedure used so far, the modification consists of a change in the apparatus arrangement and measurement of the decrease in solute concentration in the liquid phase only. The method has been tested by measuring the limiting activity coefficients of heptane in N-methylpyrrolidone at 25, 50 and 55 °C. The results are in good agreement with published values determined by various methods.
