13.13 b Anode in cell diagram question

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martha-1I
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Joined: Fri Sep 26, 2014 2:02 pm

13.13 b Anode in cell diagram question

Postby martha-1I » Wed Feb 04, 2015 10:39 pm

In 13.13 b, why is it that I2-(s) is not used as the anode? I wrote it as the Anode in the cell diagram because I thought that since it was a solid in the oxidization 1/2 reaction that it would be the anode, but the solutions manual has Pt(s) as the anode. It says that "an inert electrode such as Pt is necessary when both oxidized and reduced species are in the same solution," but I do not understand what this means exactly. Could someone explain it to me?

Satvir Saggi 1I
Posts: 22
Joined: Fri Sep 26, 2014 2:02 pm

Re: 13.13 b Anode in cell diagram question

Postby Satvir Saggi 1I » Thu Feb 05, 2015 6:29 pm

1. I2(s) is not a metal and therefore, a metal conductor is required for the anode half cell.

2. "An inert electrode such as Pt is necessary when both oxidized and reduced species are in the same solution". This simply means that when both both species are aqueous in a half cell, an inert metal electrode is required.


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