When to add Pt(s) to a cell diagram?

[trase aguigam 2A]

Hello all, I've been curious as to why Pt(s) would show up randomly during a cell diagram question. Perhaps I overlooked something, but I am very confused.

When is it appropriate to add Pt(s) to our galvanic cell drawing?

[Amber_Carlton_3D]

In a cell, metal is necessary in order to conduct electrons. When there are no metals present in your equation, you must then add a metal to your cell diagram. You would find Pt(s) in a cell diagram because there must have been no metals present without it. For example, you will not find Pt(s) in a cell diagram when Ag is already in the equation because it is a metal.

[204751840 2E]

It should be noted that it needs to be a pure, solid (or liquid, in the case of Hg) metal. Metal ions and metals bonded to larger compounds (Ni(OH)2 for example) are not adequately able to conduct electrons.