Talk:Diffusiophoresis and diffusioosmosis
|WikiProject Chemistry||(Rated Stub-class, Low-importance)|
A fundamental question
Why to use the intricate "Diffusiphoresis" word in place of simply "Diffusion".
The "diffusion gradient" makes no sense and should be replaced by "concentration gradient".
This page should be critically reviewed and merged with that of Molecular diffusion, or simply deleted. Or do I miss a key point, and it describes another process than simple diffusion ? Shinkolobwe (talk) 22:34, 30 July 2009 (UTC)
Diffusiophoresis is not at all molecular diffusion. It is a process linked to the occurrence of diffusion and the development of a diffusion related flow flux in the course of it. — Preceding unsigned comment added by 220.127.116.11 (talk) 16:01, 24 October 2011 (UTC)
I also fail to understand how this is different than simple diffusion. It would really help distinguish this process if someone familiar with it could provide an equation not identical to Fick's laws for diffusion. The preceding comment claims they are distinct, but I believe the commentator was fundamentally confused. Belus 01:03, 19 November 2011 (UTC)
I agree that "diffusion gradient" is confusing, so I have removed it. But diffusiophoresis is not the same as diffusion in the sense of Fick's law. Fick's law relates motion of species A due to a gradient in species A (ie in its own concentration) whereas diffusiophoresis is motion of species A in response to a gradient in species B. I will do a bit of work on the page to make this clearer. Rpsear (talk) 16:59, 24 December 2017 (UTC)