Consider a mixture of benzene (1) and a proprietary organic molecule (2) that is in vapor–liquid equilibrium at 70°C. The proprietary molecule and benzene form a completely miscible liquid phase, but the proprietary molecule has a negligible vapor pressure. The activity coefficient at infinite dilution for this system is reported to be γ^∞₂ = 99.7. As best you can, determine the equilibrium mole fraction of the proprietary molecule in the liquid when the system pressure equals P₁^sat.