Calculating Standard Cell Potentials

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Steph S 2F
Posts: 10
Joined: Fri Sep 26, 2014 2:02 pm

Calculating Standard Cell Potentials

Postby Steph S 2F » Fri Feb 05, 2016 3:20 pm

If we are asked to find the standard cell potential, but both half reactions are given as reduction potentials in the table, how do we know which one to oxidize?

Nathan Cai 1J
Posts: 18
Joined: Fri Sep 25, 2015 3:00 am

Re: Calculating Standard Cell Potentials

Postby Nathan Cai 1J » Fri Feb 05, 2016 4:45 pm

Usually you flip the one where if you add both potentials up, you get a positive number. For example if you two half reactions that E=2.15 V and E=1.25 V, you would flip the E=1.25 V.

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