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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: cootcoot on September 02, 2008, 08:44:25 pm

Title: determining the minimum voltage required for an electrolytic reaction...
Post by: cootcoot on September 02, 2008, 08:44:25 pm: i'm not sure whether we need to know this, but if you do know...

is it E oxidant - E reductant

or E reductant - E oxidant
Title: Re: determining the minimum voltage required for an electrolytic reaction...
Post by: Collin Li on September 02, 2008, 08:53:59 pm: The second one. It's supposed to be the reduction potential ( $E^o$ ) of the cathode minus the anode's, which would imply the first one, but if you're talking about the "voltage required for an electrolytic reaction," then it's the second one.

It doesn't make a difference though. The first one is just the negative version of the second one. If you get a negative number, just ignore it.