- #1
FranzS
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- TL;DR Summary
- How is surface taken into account in van der Waals equation?
How is surface taken into account in van der Waals equation?
( P + a n2/V2 ) ( V - nb ) = nRT
The term a n2/V2 makes for a reduction of the expected pressure, due to surface effects (gas molecules near the surface sense a net attraction force towards the "inside of the volume").
But how is the amount of surface area taken into account? The container may be a ball, a cube, or a corrugated shape, hence different surface areas should make for a different amount of surface effect (pressure reduction).
( P + a n2/V2 ) ( V - nb ) = nRT
The term a n2/V2 makes for a reduction of the expected pressure, due to surface effects (gas molecules near the surface sense a net attraction force towards the "inside of the volume").
But how is the amount of surface area taken into account? The container may be a ball, a cube, or a corrugated shape, hence different surface areas should make for a different amount of surface effect (pressure reduction).