14.11

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donnanguyen1d
Posts: 64
Joined: Fri Sep 29, 2017 7:04 am

14.11

Postby donnanguyen1d » Sun Feb 18, 2018 5:07 pm

When comparing the Ecell, how do you know which is the cathode or anode?

DianaTrujillo2K
Posts: 40
Joined: Fri Sep 29, 2017 7:04 am

Re: 14.11

Postby DianaTrujillo2K » Sun Feb 18, 2018 6:10 pm

The anode half cell is where oxidation happens. The cathode part is where reduction happens. During oxidation there is a loss of electrins. Dheing reduction there is a gain of electrons.

Nishma Chakraborty 1J
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am

Re: 14.11

Postby Nishma Chakraborty 1J » Sun Feb 18, 2018 6:11 pm

Hi! The anode (oxidation reaction) is always written on the left side, and the cathode (reduction reaction) is always written on the right side, with a salt bridge separating the two. For instance, for a redox reaction like: 2Ag+(aq) + Cu(s) --> Cu+2(aq) + Ag(s), Cu is being oxidized, while silver is being reduced. So the diagram would look like:

Cu(s) | Cu+2(aq) || Ag+(aq) | Ag(s)

Hope this helps! :)


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