Confused about EMF equation

[AsherLev]

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Ive seen the E of cell equation as follows:

E (cell)= EMF reduction + emf oxidation

and

E (cell)= EMF cathode - EMF anode

can anyone clarify...dont these 2 equations seem to be opposite? or am i just missing something. Thanks!

 

[Cytotoxic]

They are two forms of the same equation. In both, you would add the reduction potential (EMF) of the species being reduced (cathode) to the oxidation potential (-EMF) of the species being oxidized (anode).

Hope that helps.

 

[AsherLev]

thanks a lot! i get it now