A corresponding-states examination of the equations of state of liquid argon, krypton, and xenon

摘要: Abstract Recent experimental PVT results for liquid argon, krypton and xenon have been used to examine how closely these three liquids conform a single reduced equation of state. Reduced molar volumes compared at rounded values T / c P , over virtually the entire range, using two different sets reducing parameters: (1) empirically determined, dimensionless scale factors related characteristic energy length parameters e σ intermolecular field; (2) critical constants V . The use requires no priori knowledge any constants. With adjusted obtain best agreement, all agree on average within one or parts per thousand, which is comparable with accuracy data. A comparison based literature leads differences in volume as large cent; however, by allowing nine “float” get difference again optimum are seen be equivalent. Although give agreement between fall expected error bounds values, cannot assert that they superior owing uncertainty concerning extent real departures from corresponding states. Evidence existence small, systematic, states presented, possible causes briefly discussed.