Cell Diagram Example

Moderators: Chem_Mod, Chem_Admin

Shannon Asay 1C
Posts: 102
Joined: Fri Aug 09, 2019 12:16 am

Cell Diagram Example

Postby Shannon Asay 1C » Sat Feb 22, 2020 12:16 pm

In the cell diagram we did in class, why was Pt(s) only in contact with the aqueous iron solution and not the copper?

Ellen Amico 2L
Posts: 101
Joined: Thu Sep 19, 2019 12:16 am

Re: Cell Diagram Example

Postby Ellen Amico 2L » Sat Feb 22, 2020 12:54 pm

The purpose of having the Pt is that it's an inert conductor that can transfer electrons. It's only needed when there's no conducting solids so it can do the work of moving the electrons from the anode to the cathode. Copper is a conducting solid, so the Pt isn't needed on that side. However, iron isn't a conducting solid, so the Pt is needed on that side. You can see this from the cell diagram, because it shows Cu(s)|Cu2+(aq) on one side, but the other side only has aqueous Fe.

Megan Cao 1I
Posts: 103
Joined: Sat Sep 07, 2019 12:18 am

Re: Cell Diagram Example

Postby Megan Cao 1I » Sat Feb 22, 2020 1:54 pm

having the Pt is because it's an inert conductor, so it doesn't affect the reaction. in the diagram it helps transfer electrons from anode to cathode. in the diagram copper is the conducting solid, whereas iron isnt a conducting solid, so the Pt would be with the iron.

Aarja Pavade 1H
Posts: 103
Joined: Sat Aug 17, 2019 12:18 am

Re: Cell Diagram Example

Postby Aarja Pavade 1H » Sat Feb 22, 2020 4:53 pm

The iron is in an aqueous phase, meaning that it is not a conducting solid. Thus, in the way that Cu (s) acts as an electrode, we use an inert conductor(Pt (s)) as an electrode to transfer electrons on the side with the iron.

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

Who is online

Users browsing this forum: No registered users and 2 guests