Standard Reduction Potential

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Kyra Dingle 1B
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Joined: Fri Sep 29, 2017 7:04 am

Standard Reduction Potential

Postby Kyra Dingle 1B » Mon Feb 19, 2018 12:31 am

How come the standard reduction potentials stay the same when half reactions are balanced?

Nicole 1F
Posts: 31
Joined: Fri Sep 29, 2017 7:05 am

Re: Standard Reduction Potential

Postby Nicole 1F » Mon Feb 19, 2018 12:47 am

I think because standard reduction potential is an intensive property so the amount that the reaction occurs doesn't matter.

Posts: 32
Joined: Thu Jul 27, 2017 3:00 am

Re: Standard Reduction Potential

Postby RyanS2J » Mon Feb 19, 2018 9:22 am

From a mathematical standpoint, if you take a look at the equation deltaG = -nFE, and rearrange it into E = -deltaG/nF, you will see that if we multiply the chemical reaction by a factor, both deltaG and n change by that factor, so the net result is no change to the value of E.

Sabrina Fardeheb 2B
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Re: Standard Reduction Potential

Postby Sabrina Fardeheb 2B » Mon Feb 19, 2018 12:15 pm

Even when you multiply the half reactions by a factor in order to balance the number of electrons, the overall change of E does not change, while the value of delta G does.

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