Pt
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 67
- Joined: Fri Sep 28, 2018 12:24 am
Pt
When do you add Pt to the voltaic cell? Are there some conditions to memorize? Are there some special conditions that we need to remember?
-
- Posts: 68
- Joined: Fri Sep 28, 2018 12:26 am
Re: Pt
You would only put that in your diagram if the question says a platinum electrode is used. You would generally use a platinum electrode when the actual substances you're working with are gases.
-
- Posts: 32
- Joined: Fri Sep 28, 2018 12:21 am
Re: Pt
I noticed in the solutions manual that pt was added when there were 2 aqueous solutions in the anode or cathode. And when there was one gas and one aqueous solution.
-
- Posts: 31
- Joined: Thu Jan 10, 2019 12:17 am
Re: Pt
I agree with the above. Platinum is only used in an electrode when you have nonconducting solids, or aqueous/gaseous substances in one half of your electrochemical cell (that is, in the absence of conducting metal/solid). This is because in every electrochemical cell you need some current conducting metal. Sometimes the metal will play a direct role in the reaction (like Fe or Ag), but in the case that you don't have any of those metals, then you would use a platinum electrode. Also, platinum electrodes are inert, which means they won't interfere with the reaction in any way.
-
- Posts: 65
- Joined: Fri Sep 28, 2018 12:24 am
Re: Pt
You use Pt when you have nonconducting solids! For example, if your cell diagram has two aqueous solutions, or solid that cannot conduct, you would use Pt.
-
- Posts: 99
- Joined: Fri Sep 28, 2018 12:17 am
Re: Pt
You add Pt(s) when there is not a solid on either the anode or cathode side. Sometimes it will tell you what kind of solid to add in the problem.
-
- Posts: 61
- Joined: Fri Sep 28, 2018 12:17 am
Re: Pt
Basically, if there is no solid, you add Pt as your cathode or anode because it does not affect the reaction as it is an inert solid.
-
- Posts: 61
- Joined: Fri Sep 28, 2018 12:25 am
- Been upvoted: 1 time
Re: Pt
You add it when there is no solid present or a solid that can't react. It is needed for your cell diagram.
-
- Posts: 37
- Joined: Fri Sep 28, 2018 12:22 am
-
- Posts: 81
- Joined: Fri Sep 28, 2018 12:16 am
Re: Pt
You would only add an inert electrode such as platinum(Pt) when there are no solids present in the reaction.
-
- Posts: 64
- Joined: Fri Sep 28, 2018 12:26 am
Re: Pt
You add Pt when there are no conducting solids in the cell diagram. Also, you can use graphite as well but Pt is more common in the textbook.
-
- Posts: 66
- Joined: Fri Sep 28, 2018 12:20 am
Re: Pt
Platinum is only used when you have an aqueous solution/gaseous solution as your anode/cathode. Therefore, you will only use Pt(s) in you cell diagram if you have a nonconducting solid.
-
- Posts: 61
- Joined: Fri Sep 28, 2018 12:23 am
Return to “Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams”
Who is online
Users browsing this forum: No registered users and 13 guests