Osmosis when membrane is permeable to both solute and water?

[sameeralord]

Hello everyone,

Lets say there is a membrane, which has a channel for the solute(eg sodium) and another channel for water

Now if I have a hypertonic (more sodium) solution in side A, and hypotonic (less sodium) solution in side B. Which way would water go?

* I'm very confused here diffusion and osmosis both occurring.

Does water follow sodium or sodium follows water?

Thanks

 

[Borek]

Do they have to go in the same direction?