## standard potential of galvanic cell

bellaha4F
Posts: 104
Joined: Wed Sep 18, 2019 12:20 am

### standard potential of galvanic cell

just to clarify, when using the formula Ecell=Ecathode-Eanode, when given the potential of one of the half reactions, we do NOT change the sign if its the backwards reaction right? So like if Cu 2+ + 2e --> Cu is +0.34 V, and the half reaction was Cu --> Cu 2+ + 2e, we would still use +0.34 V and not -0.34 V right?

005162902
Posts: 102
Joined: Wed Sep 18, 2019 12:15 am

### Re: standard potential of galvanic cell

Yes you do not change the sign. Leave the values as is and plug them into Ecell= Ecathode-Eanode