When to use Platinum as an electrode

Moderators: Chem_Mod, Chem_Admin

Tai Metzger 3K
Posts: 103
Joined: Sat Aug 24, 2019 12:17 am

When to use Platinum as an electrode

Postby Tai Metzger 3K » Wed Mar 04, 2020 12:46 pm

Hi! When the electrode's element is not specified in a question (i.e. only the dissolved ions are given), do we automatically assume that it is a Pt electrode when writing ell diagrams? Are there other materials that the electrode could be made of?
Thanks!

LBacker_2E
Posts: 104
Joined: Wed Sep 18, 2019 12:21 am
Been upvoted: 1 time

Re: When to use Platinum as an electrode

Postby LBacker_2E » Wed Mar 04, 2020 12:58 pm

Usually you use platinum, but graphite or any other non-reactive metal would suffice.

905373636
Posts: 62
Joined: Thu Aug 01, 2019 12:15 am

Re: When to use Platinum as an electrode

Postby 905373636 » Wed Mar 04, 2020 1:48 pm

If your reaction involves conductive metals like Ag and Cu, though, you do not need to involve Pt as a conductor for your cell diagram.

Jared Khoo 1G
Posts: 107
Joined: Wed Sep 18, 2019 12:16 am

Re: When to use Platinum as an electrode

Postby Jared Khoo 1G » Wed Mar 04, 2020 5:03 pm

Does anyone know which elements are considered conductive enough that platinum is not used to transfer electrons? I remember seeing liquid mercury as something that can transfer electrons but I forgot whether that was true or not.

pmokh14B
Posts: 107
Joined: Sat Aug 17, 2019 12:15 am

Re: When to use Platinum as an electrode

Postby pmokh14B » Wed Mar 04, 2020 6:49 pm

Usually, you should use platinum, but other nonreactive metals (i.e graphite) are also possible.


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

Who is online

Users browsing this forum: No registered users and 2 guests