Potential Difference vs. EMF

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jeffreyli1L
Posts: 8
Joined: Wed Sep 21, 2016 2:55 pm

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
Posts: 11
Joined: Thu Sep 29, 2016 3:00 am

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.

DianaR2I
Posts: 10
Joined: Wed Sep 21, 2016 2:55 pm

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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