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Ref: Van der Waals Equation @ Wikipedia
The above paragraph is explains how intermolecular attraction reduces the gas pressure, assuming that there is no attraction between walls and particles.
In practice, would there be a change in pressure from one kind of wall to another, if we ensure that there is no actual condensation? Are there materials that attract nitrogen molecules so strongly that the pressure is different when they are used to line the wall? Or maybe a similar effect in water vapor, steam, alcohol or acetone?
the bulk of the particles do not experience a net force pulling them to the right or to the left. This is different for the particles in surface layers directly adjacent to the walls. They feel a net force from the bulk particles pulling them into the container, because this force is not compensated by particles on the side where the wall is (another assumption here is that there is no interaction between walls and particles, which is not true, as can be seen from the phenomenon of droplet formation; most types of liquid show adhesion). This net force decreases the force exerted onto the wall by the particles in the surface layer.
The above paragraph is explains how intermolecular attraction reduces the gas pressure, assuming that there is no attraction between walls and particles.
In practice, would there be a change in pressure from one kind of wall to another, if we ensure that there is no actual condensation? Are there materials that attract nitrogen molecules so strongly that the pressure is different when they are used to line the wall? Or maybe a similar effect in water vapor, steam, alcohol or acetone?
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