## Cell potential and Gibbs free energy

$\Delta G^{\circ} = -nFE_{cell}^{\circ}$

juchung7
Posts: 44
Joined: Fri Sep 29, 2017 7:05 am

### Cell potential and Gibbs free energy

When are you supposed to convert gibbs free energy into cell potential (deltaG=-nFE) instead of just subtracting standard cell potentials?

Rachel Brown 3A
Posts: 52
Joined: Fri Sep 29, 2017 7:06 am

### Re: Cell potential and Gibbs free energy

You do this when you are trying to get the cell potential of a half reaction or you are given cell potentials of half reactions. For some reason, half reaction cell potentials are not state functions so you cannot just add or subtract them.