Timeline for Diffusion across a thin film
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Mar 11, 2019 at 23:56 | history | edited | A.K. | CC BY-SA 4.0 |
deleted 16 characters in body
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| Mar 11, 2019 at 17:23 | comment | added | Karsten♦ | If it is a real system, it probably is quasi-steady state. I don't have a good example of a real steady state system one could actually accomplish, but you can come close by making a membrane with a small cross-section and well-stirred very large reservoirs on both sides. | |
| Mar 11, 2019 at 7:39 | comment | added | MaxW | @KarstenTheis - I didn't remember that diffusion according to Fick's law was considered to be a steady state. Since the concentration on both sides of the membrane will be changing until equilibrium, as well as the rate of diffusion across the membrane, I was thinking of that as more of a quasi-steady state. // My imagination got the better of me and I was wondering about something like an ion-pumping biological membrane to get the weird hyperbolic profile. | |
| Mar 11, 2019 at 7:34 | comment | added | MaxW | @A.K. - Looked at your answer which is much better so I deleted mine. | |
| Mar 11, 2019 at 4:25 | comment | added | Karsten♦ | Is the membrane homogenous? Does the membrane have preferential interactions with the solute compared to the solute:solvent interactions? If the answer is no to both, how about having the solute diffuse out on both sides until a steady state has been reached? | |
| Mar 11, 2019 at 3:01 | history | tweeted | twitter.com/StackChemistry/status/1104940270989336576 | ||
| Mar 11, 2019 at 1:42 | answer | added | A.K. | timeline score: 3 | |
| Mar 10, 2019 at 18:06 | history | asked | katara | CC BY-SA 4.0 |