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Vapour Pressure β
Vapour Pressure
Vapour pressure or equilibrium vapour pressure is the pressure of a vapour in thermodynamic equilibrium, with its condensed phases in a closed system. All liquids have a tendency to evaporate, and some solids can sublimate into a gaseous form.
The Vapour Pressure of the substance in the temperature range between 15 and 30οΏ½C is presented in a dropbox, which allows you to present the vapour pressure in different units: mm Hg, Pa, hPa or mbar. The selected unit is remembered when the exiting the program. The temperature at which this pressure occurs is presented, if possible.
The Vapour Pressure of substances with a Boiling Point at or above 350οΏ½C is generally neglectible. The values for Vapour Pressure mentioned at substances with a Boiling Point above 350οΏ½C may have a reduced accuracy if they are calculated or estimated in stead of being measured.