Cell diagrams

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Celeste 1I
Posts: 44
Joined: Fri Sep 28, 2018 12:18 am

Cell diagrams

Postby Celeste 1I » Sun Mar 03, 2019 10:56 pm

For some of the answers in the book they add Platinum to the cell diagram, or is already in the diagram and seems random to me. Why do they sometimes add Pt?

705170809
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am
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Re: Cell diagrams

Postby 705170809 » Sun Mar 03, 2019 10:59 pm

In order for a cell diagram to work, you need a metal conductor. If a metal conductor isn't found in the anode or cathode, Pt is added.

Andrew Bennecke
Posts: 62
Joined: Fri Sep 28, 2018 12:15 am

Re: Cell diagrams

Postby Andrew Bennecke » Sun Mar 03, 2019 11:59 pm

For certain cell diagrams that contain electrodes without solids, i.e, only aqueous solutions, require metal conductors and platnium works best.

Diana Sandoval 1K
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Re: Cell diagrams

Postby Diana Sandoval 1K » Mon Mar 04, 2019 12:30 am

If there is no solid or metal added they include Pt or C in order for it to work.

Mona El Masri 1F
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Joined: Fri Sep 28, 2018 12:20 am

Re: Cell diagrams

Postby Mona El Masri 1F » Mon Mar 04, 2019 10:27 am

Add P(t) solid to any side of the reaction that doesn't have a solid. So, if you only have gas, aqueous, or liquid on one side of the reaction, you need to add P(t). If there is a solid in one reaction and not the other, you still have to add Pt to the reaction without the solid.

anthony_trieu2L
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Joined: Fri Sep 28, 2018 12:29 am

Re: Cell diagrams

Postby anthony_trieu2L » Mon Mar 04, 2019 11:39 am

That is correct. The only exception for liquids is mercury liquid, which is a good conductor of electricity. Therefore, if mercury liquid is present, you do not need to add Pt.

Jasmine Chow 1F
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Re: Cell diagrams

Postby Jasmine Chow 1F » Mon Mar 04, 2019 12:15 pm

If there are no solid metals in the reaction then you would ad Pt (solid) as the reaction needs a solid metal to work therefore Pt (solid) or C(Gr) are often used to replace these needed elements.

AlyssaBei_1F
Posts: 99
Joined: Fri Sep 28, 2018 12:17 am

Re: Cell diagrams

Postby AlyssaBei_1F » Mon Mar 04, 2019 12:20 pm

If the anode or cathode does not include a solid, you add Pt(s) to whatever side does not have a solid. The aqueous solutions always go near the line (I). For example Pt(s) I Na (aq) II cathode.

LedaKnowles2E
Posts: 62
Joined: Fri Sep 28, 2018 12:27 am

Re: Cell diagrams

Postby LedaKnowles2E » Mon Mar 04, 2019 1:16 pm

Pt is sometimes added when one half of the reaction only involves aqueous solutions and a solid electrode is needed.


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