Adding Pt(s) to cell diagram

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Ashley McClearnen 1B
Posts: 59
Joined: Fri Sep 28, 2018 12:26 am

Adding Pt(s) to cell diagram

Postby Ashley McClearnen 1B » Mon Feb 25, 2019 2:26 pm

How do you know when to add Pt(s) to a cell diagram?

taline_n
Posts: 64
Joined: Fri Sep 28, 2018 12:17 am

Re: Adding Pt(s) to cell diagram

Postby taline_n » Mon Feb 25, 2019 2:34 pm

When the half-reaction for either reduction or oxidation doesn't contain a solid (reactants and products are both in aqueous form), you would have to use either Pt (s) or C (graphite) as the electrode. Usually, we use Pt (s).

Adam Vuilleumier 2K
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

Re: Adding Pt(s) to cell diagram

Postby Adam Vuilleumier 2K » Mon Feb 25, 2019 2:36 pm

You use Pt(s) in a diagram to allow electron current to flow. Without platinum or some other solid conductor, electrons would not be able to flow from the anode to cathode and there would be no voltage.

Brian Hom 2F
Posts: 60
Joined: Fri Sep 28, 2018 12:24 am

Re: Adding Pt(s) to cell diagram

Postby Brian Hom 2F » Mon Feb 25, 2019 2:38 pm

You know to add Pt(s) when the half reaction for either the cathode or the anode does not contain a solid. For the battery to function, we need a solid like platinum, which is an inert conductor, in order to exchange the electrons between the two reactions.


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