Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

ABSTRACT

Solubilities of nine nonpolar gases (H2, N2, O2, CH4, C2H6, C2H4, CF4, SF6, and CO2) in mixtures of water + 2,2,2-trifluoroethanol (TFE) at 298.15 K and 101.33 kPa partial pressure of gas are reported. A polynomial dependence of the solubilities on the molar fraction of the binary liquid mixture is found. The Henry's constants at the vapour pressure of water, the standard changes in the Gibbs energy for the solution process and for the solvation process, and the so-called excess Henry's constant are calculated. Gibbs energies for the solution process and excess Henry's constants have been calculated using the Scaled Particle Theory (SPT).