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Non Life Sciences => Chemistry => Topic started by: scientizscht on 10/07/2020 19:20:35

Title: What is the rate of concentration replenishment?
Post by: scientizscht on 10/07/2020 19:20:35

Hello

I still have not been able to find out how to calculate the concentration replenishment when a catalytic particle converts the substrate of a solution.

What is the mass transport via diffusion that the catalytic particle receives assuming that the substrate concentration does not change in the solution?

This mass transport will determine the maximum theoretical reaction rate.

Thanks!

Title: Re: What is the rate of concentration replenishment?
Post by: Bored chemist on 10/07/2020 19:30:14

Quote from: scientizscht on 10/07/2020 19:20:35

I still have not been able to find out how to calculate the concentration replenishment when a catalytic particle converts the substrate of a solution.

Yes you did.

Quote from: Bored chemist on 26/06/2020 13:21:47

Quote from: scientizscht on 26/06/2020 13:02:05

I still have not received any answer. How can I calculate the rate at which concentration is replenished on a catalytic surface? How many molecules per cm2 per second for a solution of specific concentration?

Thanks!

Yes you did.
https://www.thenakedscientists.com/forum/index.php?topic=77801.msg584055#msg584055

Title: Re: What is the rate of concentration replenishment?
Post by: Bored chemist on 10/07/2020 19:37:26

For some reason, you don't seem to think that diffusion controlled reactions are that fast.

This reaction is not diffusion controlled- because the hydrogen produced gets in the way.
If it was only limited by diffusion, it would be quicker.