The solid + vapor and liquid + vapor phase equilibrium properties of neon + krypton

Abstract

A vapor-recirculation equilibrium cell was used to investigate the solid + vapor and liquid + vapor equilibria and the three-phase curve (equilibrium between solid, liquid, and vapor) for neon + krypton. Gas phase compositions were measured above solid krypton at 100.00, 110.00, and 115.00 K and at pressures to 95 atm (9.6 MPa). Both gas and liquid phase compositions were determined at 120.00, 130.00, 140.00, and 150.00 K at pressures to 106 atm (10.7 MPa). Comparison of cross second virial coefficients from the experimental gas phase results with values obtained from a corresponding states correlation indicate that a deviation parameter from the geometric mean mixing rule for energy parameters of approximately 0.23 is necessary to reconcile the experimental and predicted virial coefficients. Analysis of the Henry's law constants obtained from the liquid phase results indicates a deviation parameter of approximately 0.21.