Galvanic cell set up

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Maria Bajenov 1I
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Galvanic cell set up

Postby Maria Bajenov 1I » Sat Feb 24, 2018 2:30 pm

Since a galvanic cell corresponds to a spontaneous reaction, is the left side of the cell diagram always the anode?

Manvir2K
Posts: 32
Joined: Fri Sep 29, 2017 7:05 am

Re: Galvanic cell set up

Postby Manvir2K » Sat Feb 24, 2018 2:40 pm

The left side is always there anode for a galvanic cell.

Tia Tomescu 2D
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Re: Galvanic cell set up

Postby Tia Tomescu 2D » Sat Feb 24, 2018 5:06 pm

To add on to that, in real life situations the left might not be the anode, it is just standardized like so in textbooks so that it is easier to comprehend.

Rohan Chaudhari- 1K
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Re: Galvanic cell set up

Postby Rohan Chaudhari- 1K » Sat Feb 24, 2018 5:20 pm

It's usually on the left, but you can write it on the right.

Jason Liu 1C
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Re: Galvanic cell set up

Postby Jason Liu 1C » Sat Feb 24, 2018 10:22 pm

Usually the cathode is on the right in a cell diagram, but you should find the standard potentials of each half reaction to make sure. The reaction with the more positive standard potential will be the cathode.

Rachel Formaker 1E
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Re: Galvanic cell set up

Postby Rachel Formaker 1E » Sun Feb 25, 2018 12:21 pm

Since the reactions in Galvanic cells are spontaneous and Eocell = Eocathode - Eoanode, the reaction with the more positive (or less negative) standard reduction potential should be at the cathode so that Eocell > 0.

Erik Khong 2E
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Re: Galvanic cell set up

Postby Erik Khong 2E » Sun Feb 25, 2018 6:49 pm

Yes, in the textbook it says that Reduction, which is the cathode, is Right to maintain clarity.

Ridhi Ravichandran 1E
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Re: Galvanic cell set up

Postby Ridhi Ravichandran 1E » Sun Feb 25, 2018 8:19 pm

Yes, in order to make the overall cell potential positive (which is what we want for a galvanic cell), the anode needs to be on the left and cathode needs to be on the right.

Scott Chin_1E
Posts: 55
Joined: Sat Jul 22, 2017 3:00 am

Re: Galvanic cell set up

Postby Scott Chin_1E » Sun Feb 25, 2018 9:26 pm

But in a case in which you were unsure, you can always refer to the written reaction to determine which reactant is being oxidized and which is being reduced. This will help you find out which side is the anode or cathode ("redcat").


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