This work is inserted in a research program that consists mainly in the experimental and theoretical study of the effect of association/solvation between solute and solvent molecules in the solubility of gases in liquids. The solubilities of tetrafluoromethane in lower alcohols (methanol, ethanol, 1-propanol, 1-butanol) have been determined in the temperature range of 288-308 K, at atmospheric pressure, using an automated apparatus recently assembled in our laboratory. An accuracy of 0.6 % and a precision of the same order of magnitude was achieved. The solubility is the lowest in methanol which is the highest associated alcohol and increases with the C-content of the alcohol. The molar Gibbs energy, enthalpy and entropy of solution were calculated from the experimental results (at 1 atm partial pressure of the gas and 298 K). A semiempirical correlation between the solubility of CF4 in alcohols at 298 K and the Gutmann acceptor number (AN) of the solvents has been developed.
Compounds
#
Formula
Name
1
CH4O
methanol
2
CF4
tetrafluoromethane
3
C2H6O
ethanol
4
C3H8O
propan-1-ol
5
C4H10O
butan-1-ol
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.