Potential Difference vs. EMF

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Potential Difference vs. EMF

Postby jeffreyli1L » Sun Feb 05, 2017 5:28 pm

Could someone please elaborate upon the difference between potential difference and EMF? Is EMF simply the maximum potential difference the battery can have before any reaction occurs? Or am I missing something? Thank you!

Stephanie Demo 2N
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Re: Potential Difference vs. EMF

Postby Stephanie Demo 2N » Sun Feb 05, 2017 7:12 pm

Standard reduction potential (E°) is an intensive property that gives the voltage difference between the anode and cathode (see course reader page 47). EMF is the cell potential, which is the maximum voltage actually generated; it is denoted by Ecell.

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Re: Potential Difference vs. EMF

Postby DianaR2I » Sun Feb 05, 2017 7:46 pm

Emf is the maximum potential difference between the two electrodes ( cathode/anode) when no current is flowing in the circuit. Potential difference is the difference between the electrode potentials when current is flowing.

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