Vapor−liquid equilibrium data have been measured for the systems carbon dioxide + pentane at (310.15,
333.15, and 363.15) K and carbon dioxide + toluene at 323.15 K and 333.15 K. The experimental data
have been correlated by the Peng−Robinson equation of state with one interaction parameter. In addition,
the group pair parameters relating to CH2 + CO2 and ArCH + CO2 in the PRASOG group contribution
model are determined.
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