November 29, 2015

Homework Help: chemistry

Posted by Anonymous on Sunday, November 20, 2011 at 1:56pm.

Balancing redox equations

reactants: Cu, NO3^- (the negative sign is nex to the O, above the 3).
products: Cu^2+, NO2

Medium: Acidic

Cu+ NO3^- ----> Cu^2+ + NO2

Okay, I don't understand how to do this problem...but something someone needs to clear up for me...why does N in NO3^- have an oxidation state of 5 and in then NO2 has an oxidation state of 4?

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