In case the term "saturation pressure" is causing you confusion, here is something to think about. The saturation pressure at a given temperature is the pressure at which a gas will turn into a liquid upon compression; alternatively, it is the pressure at which a liquid will vaporize upon expansion. The "saturation temperature" is similar: at a given pressure, it is the temperature at which a gas will condense upon cooling, or a liquid will boil upon heating. Thus, there is nothing more complex about a saturation pressure than simply the pressure of liquid-vapor phase equilibrium.
MSS
Wednesday, October 29, 2008
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