Register to reply

Vapour pressure

by johnathon
Tags: pressure, vapour
Share this thread:
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
First in-situ images of void collapse in explosives
The first supercomputer simulations of 'spin?orbit' forces between neutrons and protons in an atomic nucleus
Magnets for fusion energy: A revolutionary manufacturing method developed
Jano L.
Apr19-12, 03:01 PM
PF Gold
P: 1,146
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