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When to use Platinum as an electrode

Posted: Wed Mar 04, 2020 12:46 pm
by Tai Metzger 3K
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!

Re: When to use Platinum as an electrode

Posted: Wed Mar 04, 2020 12:58 pm
by LBacker_2E
Usually you use platinum, but graphite or any other non-reactive metal would suffice.

Re: When to use Platinum as an electrode

Posted: Wed Mar 04, 2020 1:48 pm
by 905373636
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.

Re: When to use Platinum as an electrode

Posted: Wed Mar 04, 2020 5:03 pm
by Jared Khoo 1G
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.

Re: When to use Platinum as an electrode

Posted: Wed Mar 04, 2020 6:49 pm
by pmokh14B
Usually, you should use platinum, but other nonreactive metals (i.e graphite) are also possible.