Abstract
Solubility measurements of 15 nonpolar gases (He, Ne, Ar, Kr, Xe, H 2, D 2, N 2, O 2, CH 4, C 2H 4, C 2H 6, CF 4, SF 6 and CO 2) in 1-butanol were carried out at 263.15, 273.15, 283.15, 293.15, and 303.15 K and partial pressure of gas of 101.33 kPa. Standard changes in thermodynamic functions for the solution process at 298.15 K (Gibbs energy, enthalpy and entropy) are derived from the experimental values of the solubility of gases and its variation with temperature. Lennard-Jones 6,12 pair potential parameters and the dependence of the effective hard-sphere diameter with respect to the temperature for 1-butanol have been estimated using the equations of scaled particle theory (SPT). Making use of SPT in the reverse direction, i.e., starting from the potential parameters found through it, theoretical solubilities and thermodynamic functions for the solution process have been calculated and compared with the experimental values.
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