Standard Reduction Potential Calculations

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204635822
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Joined: Fri Sep 25, 2015 3:00 am

Standard Reduction Potential Calculations

Postby 204635822 » Thu Feb 04, 2016 1:18 pm

Since the standard reduction potential is always written as reduction, do we multiply by -1 if it is an oxidation half reaction?

Michael Le 2D
Posts: 28
Joined: Fri Sep 25, 2015 3:00 am

Re: Standard Reduction Potential Calculations

Postby Michael Le 2D » Thu Feb 04, 2016 3:31 pm

Yes! You need to multiple the standard potential given by -1. Although if you multiply the entire reaction with some stoichiometric scalar (say you need 2 mols of Cu+ instead of just 1), the standard potential remains the same. This is because standard reduction potential gives the voltage difference between two standard electrodes which is always the same regardless of how many times the reaction occurs (its an intensive property if you prefer that terminology).


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