Platinum in Cell Diagrams

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Kyra LeRoy 1E
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Joined: Sat Jul 22, 2017 3:00 am

Platinum in Cell Diagrams

Postby Kyra LeRoy 1E » Mon Feb 19, 2018 8:12 pm

When writing out the cell diagrams, how do we know when to put Pt(s) on it? And if its applicable, will it be on both sides? Or is it possible to have Pt(s) just on one side?

Thanks!

804899546
Posts: 51
Joined: Sat Jul 22, 2017 3:00 am

Re: Platinum in Cell Diagrams

Postby 804899546 » Mon Feb 19, 2018 9:04 pm

We would use an inert conductor, such as platinum, when one of the half reactions have no conducting solids in the reactants or products. An example of this would be Fe 3+ (aq) going to fe 2+ (aq). Because there is no solid for the electrons to go through, we need to place one there that can conduct electricity, which is why we add the platinum strip. And yes, it can only be on one side, whichever side needs the conductor.


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