Cathode vs Anode

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Angela Wu-2H
Posts: 50
Joined: Fri Aug 30, 2019 12:16 am

Cathode vs Anode

Postby Angela Wu-2H » Sun Feb 23, 2020 7:53 pm

What is a cathode and what is an anode? Is cathode just always the one on the left side of the cell diagram?

Helen Struble 2F
Posts: 97
Joined: Sat Aug 24, 2019 12:17 am

Re: Cathode vs Anode

Postby Helen Struble 2F » Sun Feb 23, 2020 8:01 pm

The cathode is the site of the reduction half reaction. Because metallic cations are being reduced to an uncharged species, the cathode gains mass. The anode is losing mass because the metallic species is losing electrons (being oxidized), and these cations then become aqueous in solution.

005162520
Posts: 101
Joined: Tue Sep 24, 2019 12:17 am

Re: Cathode vs Anode

Postby 005162520 » Sun Feb 23, 2020 8:03 pm

Cathode is the half reaction that is being reduced and anode is the half reaction that is being oxidized. And usually in the cell diagrams, anode is on the left and cathode is on the right.

Lauren Stack 1C
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Joined: Sat Aug 17, 2019 12:18 am

Re: Cathode vs Anode

Postby Lauren Stack 1C » Sun Feb 23, 2020 8:23 pm

The cathode is where the reduction reaction takes place in a salt bridge circuit. It is usually designated on the right side of the diagram. Conversely, the anode is where the oxidation occurs and is usually found on the left side of the diagram.

Eesha Chattopadhyay 2K
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Joined: Fri Aug 09, 2019 12:16 am

Re: Cathode vs Anode

Postby Eesha Chattopadhyay 2K » Sun Feb 23, 2020 8:27 pm

The cathode is the reaction that is being reduced, and the anode is the reaction that is being oxidized. Usually they put the anode on the left and the cathode on the right but not necessarily always.

Harry Zhang 1B
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Joined: Sat Sep 14, 2019 12:16 am

Re: Cathode vs Anode

Postby Harry Zhang 1B » Sun Feb 23, 2020 8:27 pm

Cathode is where reduction happens and anode is where oxidation happens.

805394719
Posts: 104
Joined: Wed Sep 11, 2019 12:16 am

Re: Cathode vs Anode

Postby 805394719 » Sun Feb 23, 2020 8:35 pm

A cathode is a positively charged electrode which the electrons flows toward because of its positive charge. An anode is a negatively charged electrode which the electron flows from because of its negative charge. These hold true for cathodes and anodes for a Galvanic cell. Oxidation is the loss of an electron and the result is the lost electron being transferred to the cathode which is the species that will accept the electron and be reduced. Since the electron is lost by the species that is oxidized and the electron always flows from the anode to the cathode, the oxidation reaction always occurs at the anode, whereas the reduction reaction occurs at the cathode. The reason we place the anode on the left and cathode on the right is that we want the potential between the two sides to be positive and since the potential is found by final - initial, we have to have cathode - anode which will give us a positive value.

Anushka Chauhan2B
Posts: 51
Joined: Sat Aug 24, 2019 12:16 am

Re: Cathode vs Anode

Postby Anushka Chauhan2B » Sun Feb 23, 2020 8:47 pm

The anode is where oxidation happens and the cathode is where reduction happens

EllieSchmidtke_4I
Posts: 51
Joined: Wed Feb 20, 2019 12:16 am

Re: Cathode vs Anode

Postby EllieSchmidtke_4I » Sun Feb 23, 2020 9:04 pm

The oxidation half-reaction occurs at the anode, whereas the reduction half-reaction occurs at the anode.

Areli C 1L
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Joined: Wed Nov 14, 2018 12:19 am

Re: Cathode vs Anode

Postby Areli C 1L » Sun Feb 23, 2020 9:11 pm

Cathode is what is being reduced and the anode is what is being oxidized. Mind you these would be the half rxns for their corresponding part.

Jesalynne 2F
Posts: 100
Joined: Wed Sep 18, 2019 12:18 am

Re: Cathode vs Anode

Postby Jesalynne 2F » Sun Feb 23, 2020 9:12 pm

The cathode is where reduction occurs and the anode is where oxidation occurs. I don't think it necessarily matters what side of the diagram it is on, but the anode is usually on the left side of the diagram and the cathode is on the right side.

ThomasNguyen_Dis1H
Posts: 102
Joined: Fri Aug 30, 2019 12:17 am

Re: Cathode vs Anode

Postby ThomasNguyen_Dis1H » Sun Feb 23, 2020 9:14 pm

Cathode is the half reaction that is being reduced while the anode is the half reaction that is being oxidized. I like to use the acronym a RED CAT and AN OX to tell which is which. The cathode also goes on the right side of the diagrams by convention.


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