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Pt(s) in cell diagram

Posted: Mon Feb 25, 2019 11:56 pm
by Madeline Ho 1C
How do we know to add Pt(s) to the cell diagram?
example: 14.13 Write the half-reactions, the balanced equation for the cell reaction, and the cell diagram for each of the following skeletal equations:
(b) Ce4+(aq) + I-(aq) --> I2(s) + Ce3+(aq)

Re: Pt(s) in cell diagram

Posted: Mon Feb 25, 2019 11:57 pm
by Shubham Rai 2C
You would add Pt to the Ce4+ side of the diagram as it has no solids to conduct the charges. We use Pt when there are no solids in the half reaction.

Re: Pt(s) in cell diagram

Posted: Tue Feb 26, 2019 12:06 am
by Nicolette_Canlian_2L
the metal conductor is always added to the outer part of the cell diagram.

Re: Pt(s) in cell diagram

Posted: Tue Feb 26, 2019 12:10 am
by Madeline Ho 1C
Shubham Rai 2C wrote:You would add Pt to the Ce4+ side of the diagram as it has no solids to conduct the charges. We use Pt when there are no solids in the half reaction.


the solutions show Pt(s) on both sides of the cell diagram though

Re: Pt(s) in cell diagram

Posted: Tue Feb 26, 2019 1:04 am
by Christina Chang 1C
I was confused about that too, but I came to the conclusion that since iodine is not actually a metal then iodine in solid form would not really be fit to be a conductor.