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Saturated vapor pressure


Saturated vapor pressure is the pressure, at equilibrium, exerted by the volatilized solute molecules above a solution of pure solute.

The higher the volatility of the solute, the higher the saturated vapor pressure will be (for a given temperature) – see PV scale.

Scale of Pv (kPa) at 20-25°C. Below 1 : Low volatility. From 1 to 5 : Volatile. Above 5 : Very volatile. Equivalence of pressure units: 1 atm = 760 mm Hg = 1.013 bar = 101.3 kPa
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