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Cell Diagram

Posted: Tue Feb 26, 2019 2:09 pm
by Stevin1H
When do we know to add an inert electrode in the cell diagram? And how do we know which half reactions to used based on the appendix for certain reactions. (Ex. AgBr(s) -><- Ag+(aq) + Br-(aq))

Re: Cell Diagram

Posted: Tue Feb 26, 2019 3:16 pm
by Vicky Lu 1L
We would use an inert electrode in the cell diagram when the oxidization or reduction side do not have a solid metal. In Fe^3(aq) + e- --> Fe^2+(aq), we would use Pt(s) or C(graphite) to act as the filler metal since the oxidation/reduction side don't have a metal.

Re: Cell Diagram

Posted: Tue Feb 26, 2019 3:36 pm
by Emily Huang 1E
An inert electrode is used when half rxns have no conducting solid

Re: Cell Diagram

Posted: Tue Feb 26, 2019 3:41 pm
by Lynsea_Southwick_2K
How do we know which one to add out of Pt(s) or C graphite?

Re: Cell Diagram

Posted: Tue Feb 26, 2019 3:58 pm
by Arianna Ko 2E
For a side that lacks a solid conductor, add Pt(s) to that side. This is the inert conductor you should use as the electrode to transfer electrons.