Standard Cell Potential

Moderators: Chem_Mod, Chem_Admin

Tiffany Wu 1K
Posts: 19
Joined: Wed Sep 21, 2016 2:56 pm

Standard Cell Potential

Postby Tiffany Wu 1K » Wed Mar 15, 2017 10:56 pm

For the reaction, 2H+(aq) + 2e- yields H2(g), why is the standard cell potential 0?

Christian Hardoy 3F
Posts: 41
Joined: Fri Jul 15, 2016 3:00 am

Re: Standard Cell Potential

Postby Christian Hardoy 3F » Thu Mar 16, 2017 12:38 am

The standard cell potential is 0 for this reaction because the standard cell potential of a hydrogen electrode is the standard with which we analyze all other cell potentials. In order to compare cell potentials we need a standard reference point. That standard reference point is that equation's cell potential.

Michael Cheng 1C
Posts: 51
Joined: Thu Jul 13, 2017 3:00 am

Re: Standard Cell Potential

Postby Michael Cheng 1C » Sun Feb 11, 2018 12:44 am

I am confused as to the difference between cell potential and reduction potential. Can someone explain it to me? Thanks

Cyianna 2F
Posts: 34
Joined: Wed Nov 16, 2016 3:04 am

Re: Standard Cell Potential

Postby Cyianna 2F » Sun Feb 11, 2018 3:08 pm

Cell potential is the difference between a redox reaction and an oxidation reaction. Redox potential only consists of the reduction from the half reaction in the cathode.

Posts: 23
Joined: Fri Sep 29, 2017 7:05 am

Re: Standard Cell Potential

Postby 204932558 » Sat Feb 17, 2018 11:54 pm

It' s zero because we use the reaction of hydrogen as a reference to calculate the potential of other redox reactions.

Return to “Work, Gibbs Free Energy, Cell (Redox) Potentials”

Who is online

Users browsing this forum: No registered users and 1 guest