Pt(s) in cell diagram

Moderators: Chem_Mod, Chem_Admin

Madeline Ho 1C
Posts: 37
Joined: Mon Apr 23, 2018 3:00 am

Pt(s) in cell diagram

Postby Madeline Ho 1C » Mon Feb 25, 2019 11:56 pm

How do we know to add Pt(s) to the cell diagram?
example: 14.13 Write the half-reactions, the balanced equation for the cell reaction, and the cell diagram for each of the following skeletal equations:
(b) Ce4+(aq) + I-(aq) --> I2(s) + Ce3+(aq)

Shubham Rai 2C
Posts: 64
Joined: Fri Sep 28, 2018 12:27 am

Re: Pt(s) in cell diagram

Postby Shubham Rai 2C » Mon Feb 25, 2019 11:57 pm

You would add Pt to the Ce4+ side of the diagram as it has no solids to conduct the charges. We use Pt when there are no solids in the half reaction.

Nicolette_Canlian_2L
Posts: 77
Joined: Fri Sep 28, 2018 12:25 am
Been upvoted: 1 time

Re: Pt(s) in cell diagram

Postby Nicolette_Canlian_2L » Tue Feb 26, 2019 12:06 am

the metal conductor is always added to the outer part of the cell diagram.

Madeline Ho 1C
Posts: 37
Joined: Mon Apr 23, 2018 3:00 am

Re: Pt(s) in cell diagram

Postby Madeline Ho 1C » Tue Feb 26, 2019 12:10 am

Shubham Rai 2C wrote:You would add Pt to the Ce4+ side of the diagram as it has no solids to conduct the charges. We use Pt when there are no solids in the half reaction.


the solutions show Pt(s) on both sides of the cell diagram though

Christina Chang 1C
Posts: 34
Joined: Thu May 10, 2018 3:00 am

Re: Pt(s) in cell diagram

Postby Christina Chang 1C » Tue Feb 26, 2019 1:04 am

I was confused about that too, but I came to the conclusion that since iodine is not actually a metal then iodine in solid form would not really be fit to be a conductor.


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

Who is online

Users browsing this forum: No registered users and 2 guests