Bubble point pressures for the binary mixture of pentafluoroethane (HFC-125) with chloropentafluoroethane (CFC-115) were measured at the temperature ranges from (243.15 to 333.15) K using a static apparatus. The uncertainties of measurements were estimated to be less than 20 mK in temperature, 1.2 kPa in pressure, and 0.001 in liquid-phase mole fraction. The experimental data were correlated with the Peng Robinson equation of state with van der Waals mixing rules. The correlation results have a good agreement with the experimental results. The overall average absolute deviation was 0.36 % between measured pressures and calculated results from the Peng Robinson (PR) equation of state. The interaction parameter k12 was obtained for different temperatures, and the relationship between k12 and the temperature was correlated with the deviation of +- 0.5 %. The azeotropic compositions and pressures at specified temperatures were calculated.
Compounds
#
Formula
Name
1
C2ClF5
1-chloro-1,1,2,2,2-pentafluoroethane
2
C2HF5
pentafluoroethane
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.