Vapour pressure

by johnathon
Tags: pressure, vapour
johnathon is offline
Apr18-12, 06:07 AM
P: 40
According to Wikipedia, vapour pressure is the pressure of a vapor in thermodynamic equilibrium with its condensed phases in a closed system.
Does that mean the pressure the vapour exerts on the container or the pressure the vapour exerts on the liquid?
Phys.Org News Partner Physics news on
Information storage for the next generation of plastic computers
Scientists capture ultrafast snapshots of light-driven superconductivity
Progress in the fight against quantum dissipation
Jano L.
Jano L. is offline
Apr19-12, 03:01 PM
P: 1,027
if we compare the pressure of saturated vapor on the container at the level of the liquid and the pressure on the liquid, these are the same, by Pascal's law - in fluids, static pressure is the same in all directions. This is the pressure given as "pressure of saturated vapor" in tables (depends on the temperature and the curvature of liquid surface).

If the pressure on the container was considered at higher altitude, this would be lower due to gravity (look for barometric formula).


Register to reply

Related Discussions
Vapour pressure? General Physics 2
Osmosis, osmotic pressure, vapour pressure... Classical Physics 5
Vapour pressure of solution from osmotic pressure Biology, Chemistry & Other Homework 0
Vapour pressure General Physics 3
Vapour Pressure and External Pressure General Physics 4