October 5, 2015

Homework Help: Chemistry

Posted by K on Sunday, April 14, 2013 at 3:36pm.

I'm having a little trouble determining oxidation numbers for elements in a redox reaction

KMnO4+HCl--> MnCl2+Cl2+H2O+KCl

So far what I have for the reactants side is: K= +1 Mn= +7 O4= -2 H= +1 Cl= -1

And for the products side I have:
Mn= +2 Cl2= -1 Cl2(diatomic)= 0 H2=+2 O= -2 K= +1 Cl= -1

Please tell me if these are right, and I wasn't sure about H2, but I'm guessing it could either be +2 or +1, since it was H20 I think it would be +1, but I am not entirely sure :(

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