Pressure-volume-temperature relationship for a mixture of difluorodichloromethane and 1,1-difluoroethane

Abstract

0.80 mole fraction. I n this high concentration range of gaseous methane, the molar volume of the gas mixture is linear in mole fraction, and therefore, the partial molar volume of methane in the gas is trivially different from the molar volume of pure gaseous methane.

Pressure-volume-temperature relation for a mixture of monochlorotrifluoromethane and trifluoromethane

“…Liquid Density. The saturated liquid densities were determined by a float technique which has been described in detail in an earlier paper (5). The data covered the temperature range from 229.8°to 284.2°K.…”

“…Pressure Measurements. All pressure measurements were taken with the PVT apparatus described in an earlier paper (5).…”

“…Vapor Pressure. The term vapor pressure is used here in the general sense, since the composition of the azeo-trope does not remain invariant with changes in temperature (5). However, accurate vapor pressure data of this mixture can be obtained by taking measurements at the bubble point.…”

Computer Programs for the Calculation of Thermodynamic Properties of Cryogens and other Fluids

“…This utility allows the user to calculate thermodynamic properties defined by a number of different pairs of input variables. [1][2][3][4][5][6][7][8][9], hydrocarbons [10][11][12][13][14][15], water [16], carbon dioxide [17], ammonia [18] and refrigerants [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. These equations are explicit in dimensionless Helmholtz energy, or have been converted to that form.…”

Pressure-volume-temperature behavior of a mixture of difluoromethane and pentafluoromonochloroethane

“…EXPERIMENTAL Sample Preparation. Both the CH2F2 (Genetron 32) and the CF1CF2CI (Genetron 115) were purified and degassed as previously described (3,4,6). Chromatographic analysis showed them to be better than 99.95 mole % pure.…”