Adding Pt(s) to a Cell Diagram

Moderators: Chem_Mod, Chem_Admin

Bryce Ramirez 1J
Posts: 120
Joined: Sat Aug 24, 2019 12:16 am

Adding Pt(s) to a Cell Diagram

Postby Bryce Ramirez 1J » Thu Mar 05, 2020 5:51 pm

For 6L.5 part b, it adds Pt(s) to the Cell Diagram, but how do you know when to add it?

Suraj Doshi 2G
Posts: 100
Joined: Fri Aug 02, 2019 12:15 am

Re: Adding Pt(s) to a Cell Diagram

Postby Suraj Doshi 2G » Thu Mar 05, 2020 6:20 pm

We must add solid platinum so that the electrons have something to bind to. Whenever no solid is present in the equations given, we have to include platinum.

Pablo 1K
Posts: 118
Joined: Sat Feb 02, 2019 12:15 am

Re: Adding Pt(s) to a Cell Diagram

Postby Pablo 1K » Thu Mar 05, 2020 7:02 pm

Platinum does not involve itself in the reaction and therefore it should be included because it does not oxidate and functions as an electrode.

Bryce Ramirez 1J
Posts: 120
Joined: Sat Aug 24, 2019 12:16 am

Re: Adding Pt(s) to a Cell Diagram

Postby Bryce Ramirez 1J » Fri Mar 06, 2020 8:09 am

Suraj Doshi 2G wrote:We must add solid platinum so that the electrons have something to bind to. Whenever no solid is present in the equations given, we have to include platinum.


In the oxidizing part of the half reaction, I^- changes to I^2 (gas I assume). Does this mean that because there is no solid present, you have to add the Pt(s)?

Rodrigo2J
Posts: 102
Joined: Sat Jul 20, 2019 12:16 am

Re: Adding Pt(s) to a Cell Diagram

Postby Rodrigo2J » Fri Mar 06, 2020 10:33 am

From my understanding, you add Pt(s) as the electrode if the half reaction (anode/cathode) does not have a solid metal or Hg(l).

Abby Soriano 1J
Posts: 103
Joined: Sat Aug 24, 2019 12:16 am

Re: Adding Pt(s) to a Cell Diagram

Postby Abby Soriano 1J » Fri Mar 06, 2020 10:34 am

Platinum is added as an inert conductor for the movement of electrons in a galvanic cell when no solid is present to do this already.

Zaynab Hashm 2I
Posts: 110
Joined: Wed Sep 11, 2019 12:15 am
Been upvoted: 1 time

Re: Adding Pt(s) to a Cell Diagram

Postby Zaynab Hashm 2I » Fri Mar 06, 2020 12:47 pm

Platinum (Pt(s)) is adder to the cell diagram whenever the oxidation/reduction half-reactions do not have a solid to conduct electricity.

Hg(l) is an exception since it can conduct electricity, so Pt(s) is not needed.

ThomasNguyen_Dis1H
Posts: 102
Joined: Fri Aug 30, 2019 12:17 am

Re: Adding Pt(s) to a Cell Diagram

Postby ThomasNguyen_Dis1H » Fri Mar 06, 2020 12:47 pm

When there isn't a solid in your reaction or cell diagram, you need to add Pt(s) so it can act was an electrode, which allows the electrons to flow from one end to the other.

Michelle N - 2C
Posts: 117
Joined: Wed Sep 18, 2019 12:19 am

Re: Adding Pt(s) to a Cell Diagram

Postby Michelle N - 2C » Sun Mar 08, 2020 10:45 pm

Just to add onto the question, when do we add Pt(s) to both sides of the cell diagram?

205389184
Posts: 100
Joined: Sat Sep 07, 2019 12:18 am

Re: Adding Pt(s) to a Cell Diagram

Postby 205389184 » Sun Mar 08, 2020 11:29 pm

We add platinum to a cell diagram when there isn't already an electrode to help transport the electrons

Sidharth D 1E
Posts: 98
Joined: Sat Aug 24, 2019 12:17 am

Re: Adding Pt(s) to a Cell Diagram

Postby Sidharth D 1E » Sun Mar 08, 2020 11:57 pm

For example when dealing with hydrogen gas in the galvanic cell, you would need to include Pt(s)

Kaitlyn Ang 1J
Posts: 116
Joined: Fri Aug 09, 2019 12:17 am
Been upvoted: 1 time

Re: Adding Pt(s) to a Cell Diagram

Postby Kaitlyn Ang 1J » Sun Mar 08, 2020 11:59 pm

Add Pt(s) whenever there is no solid in the electrodes

SVajragiri_1C
Posts: 115
Joined: Thu Jul 11, 2019 12:16 am

Re: Adding Pt(s) to a Cell Diagram

Postby SVajragiri_1C » Mon Mar 09, 2020 12:15 am

Pt(s) is for when you only have a gaseous substance, or aqueous only.

Brandon Valafar
Posts: 112
Joined: Sat Aug 17, 2019 12:16 am
Been upvoted: 1 time

Re: Adding Pt(s) to a Cell Diagram

Postby Brandon Valafar » Mon Mar 09, 2020 12:29 am

You add Platinum when the reduction reaction or the oxidation reaction does not have a solid metal element in it to conduct the electrons.

WesleyWu_1C
Posts: 117
Joined: Thu Jul 25, 2019 12:16 am

Re: Adding Pt(s) to a Cell Diagram

Postby WesleyWu_1C » Mon Mar 09, 2020 12:54 am

Platinum is an inert electrode which is why you add that to a cell diagram when you need an electrode. In addition, you can also use graphite (Cgraphite) because it is also an inert electrode.


Return to “Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams”

Who is online

Users browsing this forum: No registered users and 4 guests