Naked Science Forum

Non Life Sciences => Chemistry => Topic started by: kaukcz on 11/06/2009 21:47:20

Title: Is hydrogen bonding the cause of osmosis?
Post by: kaukcz on 11/06/2009 21:47:20

Is hydrogen bonding the cause of osmosis?

Title: Is hydrogen bonding the cause of osmosis?
Post by: Don_1 on 12/06/2009 08:04:56

It may be that there is some assistance to osmosis from hydrogen bonding, but it is not the cause of osmosis. It is caused by osmotic pressure. The difference in solution saturation and thus the pressure between two sides of a selectively semipermeable membrane.

Well that's always been my take on osmosis, maybe someone else here knows better.

Title: Is hydrogen bonding the cause of osmosis?
Post by: Chemistry4me on 12/06/2009 08:49:15

What does the question even mean? I am lost.
My take on osmosis is pretty much the same as the last poster.

Title: Is hydrogen bonding the cause of osmosis?
Post by: kaukcz on 16/06/2009 03:56:04

Right, in a system the water will move to the more concentrated side because of the osmotic pressure but what causes the difference in osmotic pressure?  Why does a concentration gradient create different  pressures on different sides of the membrane?

Title: Is hydrogen bonding the cause of osmosis?
Post by: Chemistry4me on 16/06/2009 06:48:34

What's your idea on hydrogen bonding affecting the osmotic pressure?

Title: Is hydrogen bonding the cause of osmosis?
Post by: Bored chemist on 16/06/2009 19:18:10

Osmosis can, and does, happen in systems where there is no hydrogen bonding, so the answer is no.