Hello, first post here. Here is a hypothetical partial pressure of gas question Imagine you have a two component system: Component 1 is water Component 2 is an imaginary substance that is immiscible with water, but has same boiling temp / pressure You put the two components in a pressurized cylinder with equal molar volume distribution, and set the pressure to 1atm and 99°C (of course we know pure water will be liquid at this stage). Partial pressure law implies that water (or steam) will be exerting .5 atm, as would component 2 (.5 atm and 99°C will yield a vapor). Will there be liquid water or steam inside the cylinder? Thanks for the help!