Accession Number : AD0614517

Title :   EXCESS THERMODYNAMIC FUNCTIONS FOR LIQUID MIXTURES OF METHANE+PROPANE,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF CHEMISTRY

Personal Author(s) : Cutler,A. J. B. ; Morrison,J. A.

Report Date : 05 AUG 1964

Pagination or Media Count : 15

Abstract : The vapor pressures and heat capacities of liquid mixtures of methane+propane and the heats of vaporization of methane from the mixtures have been measured in the temperature range 90 to 110K. The experimental data have been used to obtain the activity coefficients of methane, the excess Gibbs energy, the heat of mixing and the excess heat capacity. The results are compared with the quasi-lattice theory of liquid mixtures of molecules of different size and with the consequences of the principle of corresponding states applied to liquid mixtures of chain molecules. The theoretical treatments yield values of the excess Gibbs energy and the heat of mixing which are in good agreement with experiment, but the agreement is less satisfactory for the excess heat capacity. (Author)

Descriptors :   (*METHANE, THERMODYNAMICS), (*ALIPHATIC COMPOUNDS, THERMODYNAMICS), (*THERMODYNAMICS, ALIPHATIC COMPOUNDS), MIXTURES, LIQUEFIED GASES, CRYOGENICS, LOW TEMPERATURE, VAPOR PRESSURE, VAPORIZATION, EQUATIONS OF STATE

Distribution Statement : APPROVED FOR PUBLIC RELEASE