Cell Diagram


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Alina_Mitchell_2C
Posts: 13
Joined: Wed Sep 21, 2016 2:55 pm

Cell Diagram

Postby Alina_Mitchell_2C » Tue Mar 14, 2017 1:21 pm

Why would the cell diagram for the redox reaction: 2Ag(s) + Br2 --> 2AgBr(s) have the cell diagram
Ag(s)|AgBr(s)||Br-|Br2|Pt?
Why are both AgBr and Br- included?

Ara Yazaryan 1E
Posts: 44
Joined: Wed Sep 21, 2016 2:59 pm

Re: Cell Diagram

Postby Ara Yazaryan 1E » Tue Mar 14, 2017 7:28 pm

AgBr is being oxidized from 0 to +1, and subsequently Br- is being reduced from -1 to 0. This makes AgBr the anode and Br- the cathode, this is why they are included.

Hopefully that is the correct way to answer your question :)

204932558
Posts: 23
Joined: Fri Sep 29, 2017 7:05 am

Re: Cell Diagram

Postby 204932558 » Sat Feb 17, 2018 11:58 pm

Because silver loses an electron and becomes oxidized and bromine gains an electron and becomes reduced. They both need to be included in the cell expression.

Annalise Eder 2L
Posts: 49
Joined: Sat Jul 22, 2017 3:01 am

Re: Cell Diagram

Postby Annalise Eder 2L » Sun Feb 18, 2018 11:14 pm

Don't forget to include phases for all of the elements. The Br ions would be (aq).


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