Conducting Solids

Moderators: Chem_Mod, Chem_Admin

Jeffreyho97
Posts: 10
Joined: Fri Jul 15, 2016 3:00 am

Conducting Solids

Postby Jeffreyho97 » Mon Feb 06, 2017 5:48 pm

Earlier Dr. Lavelle, spoke of some reactions that have not conducting solids. Can someone explain the reasoning behind this again?

Chem_Mod
Posts: 17947
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 406 times

Re: Conducting Solids

Postby Chem_Mod » Mon Feb 06, 2017 8:57 pm

When you are dealing with a half reaction such as Cu+2(aq) + 2e- Cu(s), the copper solid becomes our electrode. However, when we deal with a half reaction in which both the products and reactions are not in the solid state, such as Fe+3(aq) + 1e- Fe+2(aq), we must use an inert electrode like Platinum (Pt).

To summarize, when you have a solid, use that as your electrode. When you only have gasses or aqueous, use Pt as your electrode.


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

Who is online

Users browsing this forum: No registered users and 3 guests