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Topic: redox indicator  (Read 3161 times)

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Offline malumunus

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redox indicator
« on: January 16, 2007, 06:29:22 PM »
Hi
    Is there any kind of redox indicator that would best indicate how well oxidation and reduction was delivered without the usage of a spectrophotometer?? If so, what kind?

Offline enahs

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Re: redox indicator
« Reply #1 on: January 16, 2007, 06:37:37 PM »
It kind of depends on what the reaction is.
But look here:
http://en.wikipedia.org/wiki/Redox_indicator
See if any of those will do.

And as I said, it depends on the nature of reaction, look into:
http://en.wikipedia.org/wiki/Complexometric_indicator
And
http://en.wikipedia.org/wiki/PH_indicator

Those are by no means definitive list, just a easy starting point.

Offline DevaDevil

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Re: redox indicator
« Reply #2 on: January 16, 2007, 06:42:00 PM »
Oxidation and reduction are best controlled by a potento- or galvanostsat, where you can control the current and potential over a cell. The charge exchanged is a measure of the amount of reaction that has taken place, whereas the voltage usually gives you an idea on what reaction. (used in a 3-electrode cell, with a reference electrode)

But for simple indicators use the links enahs provided. Indicators work as a simple version of the reference electrode in the 3-electrode cell.

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