Low Temperature Thermodynamics. The excess Gibbs function and the volumes of mixing for the system methane +

The excess <i>Gibbs</i> function <i>G</i>^e and the excess volumes of mixing I/^e have been measured at the methane triple point (90.68 K) for the system methane+propane. They were compared with <i>McGlashan</i>'s recent theory for mixtures of molecules of different sizes.