Determining reduction or oxidation

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Nathan Sanchez 1F
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Joined: Sat Jul 09, 2016 2:00 am

Determining reduction or oxidation

Postby Nathan Sanchez 1F » Sun Mar 19, 2017 1:25 pm

How do I know a specific reaction with an ion is more inclined to be strongly oxidizing or strongly reducing? Can I determine that just by the characteristics of the ions in question?

Jenny2G
Posts: 31
Joined: Wed Sep 21, 2016 1:56 pm

Re: Determining reduction or oxidation

Postby Jenny2G » Sun Mar 19, 2017 1:27 pm

You need to find the charge on the ion in the reactant and then see the charge change in the product. So if a reactant had cr3+ but had a charge of 2+ in the products it is a reduction because it gained one electron.

Vincent Tse 2B
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Re: Determining reduction or oxidation

Postby Vincent Tse 2B » Sun Mar 19, 2017 11:48 pm

Typically you'll be given cell reduction potentials for redox reactions. With the values, you determine the oxidizing and reducing power of each reaction for the observed species.

For example, the more positive the cell reduction potential is, the stronger the reduction power. The less positive, the weaker the reduction power but stronger in oxidizing power.

melissa carey 1f
Posts: 53
Joined: Fri Sep 29, 2017 6:06 am

Re: Determining reduction or oxidation

Postby melissa carey 1f » Mon Feb 05, 2018 2:21 pm

The ion which is reduced will gain electrons, and its oxidation number will decrease. On the other hand, the ion which is oxidized will lose electrons and its oxidation number will increase.

Wayland Leung
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Re: Determining reduction or oxidation

Postby Wayland Leung » Mon Feb 05, 2018 11:27 pm

In class we also learned the "LEO" acronym, where loss of electrons is oxidation. That could be a easy way to memorize what oxidation is.


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