standard cell potentials

Moderators: Chem_Mod, Chem_Admin

Christine Inyoung Chung 1F
Posts: 25
Joined: Fri Sep 25, 2015 3:00 am

standard cell potentials

Postby Christine Inyoung Chung 1F » Sat Feb 06, 2016 11:17 pm

When calculating standard cell potentials, do you always have to do standard cell potential of the cathode - the standard cell potential of the anode? or with the values given in the tables, can you reverse the reactions and reverse the value of the cell potential depending on the reaction and add the two?

Cindy Chen_2I
Posts: 43
Joined: Wed Nov 18, 2015 3:00 am

Re: standard cell potentials

Postby Cindy Chen_2I » Sat Feb 06, 2016 11:38 pm

Both will give you the correct answer!
Just remember to plug in both reduction potentials for the equation E cathode - E anode
Don't plug in oxidation potential for the anode side, or you will undo the negative in the equation.

Use which ever you're most comfortable with!

Kelly Huang 3L
Posts: 18
Joined: Fri Sep 25, 2015 3:00 am

Re: standard cell potentials

Postby Kelly Huang 3L » Sat Feb 06, 2016 11:39 pm

You don't have to reverse the values if you keep them both as reduction potentials and use the equation E(cell) = E(cathode) - E(anode)


Return to “Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams”

Who is online

Users browsing this forum: Andrew Wang 1C and 2 guests