1) iirc temperature is the measure of how fast molecules are moving. if temperature is at absolute zero, nothing's moving. diffusion is movement by definition.

2) solvent can enter/leave.

_near_ absolute zero is not at zero. So I would not expect diffusion to stop until it is at absolute zero.

Active transport.

not 100% positive but at near absolute zero, nearly everything (?), one exception being Helium, would be a solid. i believe then there are more energy barriers that would not be overcome in order for diffusion in a solid to occur.

This post was edited by cialda on Feb 4 2014 08:12am

heh i almost overlooked that. Talk about tunnel vision

After looking into it more, I think this is wrong. Diffusion or the movement of particles would still occur. However, it may not reach equilibrium state (at all?) which is what i screwed up on. The particles would still be moving but their random movement would be restricted to a more confined area. So diffusion, or movement, would still occur as Dmon_Hunter said.

This post was edited by cialda on Feb 4 2014 05:26pm