Finding charge

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Giselle Littleton 1F
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Joined: Wed Sep 18, 2019 12:20 am

Finding charge

Postby Giselle Littleton 1F » Tue Feb 18, 2020 1:05 pm

How can you know the charge of a compound in a redox reaction?

Brian Tangsombatvisit 1C
Posts: 119
Joined: Sat Aug 17, 2019 12:15 am

Re: Finding charge

Postby Brian Tangsombatvisit 1C » Tue Feb 18, 2020 1:09 pm

You can tell a compound's charge by looking at its net charge, which is usually 0 if there is no superscript shown. The superscript of the compound (ex: -2 or +3) shows its overall charge. From this information you can calculate the individual charge of each atom within the compound since they all have to add up to the overall charge.

Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

Re: Finding charge

Postby ALegala_2I » Tue Feb 18, 2020 3:41 pm

You can also find the charge by looking at the charge of the compound as a whole. For example if you have MnO4-. The total net charge for the compound is -1 and we know that oxygen has a oxidation number of -2. Since there are 4 oxygens we know that the total charge that comes form the oxygens are -8. This means that the Mn has to have an oxidation number of 7+ to yield a total net charge of -1.

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