Page 1 of 1

Oxidation versus reduction

Posted: Mon Feb 24, 2020 12:02 am
by Matt Sanruk 2H
If you were given a diagram of the electrochemical cell, should I assume that anode is on the left and the cathode is on the right?

Re: Oxidation versus reduction

Posted: Mon Feb 24, 2020 12:08 am
by SnehinRajkumar1L
Yes, that is the convention when representing galvanic cells.

Re: Oxidation versus reduction

Posted: Mon Feb 24, 2020 12:10 am
by Matt Sanruk 2H
Would there be a condition where the anode is on the right?

Re: Oxidation versus reduction

Posted: Mon Feb 24, 2020 12:15 am
by Alice Ma 2K
The anode is always the one that is oxidized and the cathode is reduced, so if you know which species are oxidized or reduced, you can differentiate between the anode and the cathode.

Re: Oxidation versus reduction

Posted: Mon Feb 24, 2020 12:26 am
by Matt Sanruk 2H
Alice Ma 2K wrote:The anode is always the one that is oxidized and the cathode is reduced, so if you know which species are oxidized or reduced, you can differentiate between the anode and the cathode.


Would you know this by an equation given or the electron flow?

Re: Oxidation versus reduction

Posted: Mon Feb 24, 2020 12:28 am
by Alice Ma 2K
Matt Sanruk 2H wrote:
Alice Ma 2K wrote:The anode is always the one that is oxidized and the cathode is reduced, so if you know which species are oxidized or reduced, you can differentiate between the anode and the cathode.


Would you know this by an equation given or the electron flow?


Given a chemical equation, you can determine what species is oxidized or reduced by looking at the oxidation number or the species themselves. Given electron flow, we know that oxidized species lose electrons and reduced ones gain them, so the electrons would flow from the oxidized ones to the reduced ones.

Re: Oxidation versus reduction

Posted: Mon Feb 24, 2020 12:58 am
by J Medina 2I
Conventionally it is shown flowing left from right where the left is the anion (anode) and the right is the cation (cathode).

Re: Oxidation versus reduction

Posted: Mon Feb 24, 2020 1:04 am
by EMurphy_2L
anode is left and cathode is right unless otherwise stated !

Re: Oxidation versus reduction

Posted: Mon Feb 24, 2020 1:13 am
by Matt Sanruk 2H
EMurphy_2L wrote:anode is left and cathode is right unless otherwise stated !


Ok, so he would not try and trick us in that way basically?

Re: Oxidation versus reduction

Posted: Mon Feb 24, 2020 5:34 am
by Michelle Song 1I
Yeah you can pretty much assume anion is left and cathode is right unless the question is worded in a way that implies differently.