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July 25, 2014

Homework Help: Chem

Posted by Tina on Sunday, March 20, 2011 at 11:09pm.

what occurs during the reaction below
4Hcl+MnO2-->MnCl2+2H2O+Cl2
1.the manganese is reduced and its oxidation number changes from +4 to +2.
2.the manganese is oxidized and its oxidation number changes from +4 to +2.
3.the manganese is reduced and its oxidation number changes from +2 to +4.
4. the manganese is oxidized and its oxidation number changes from +2 to +4.
dont understand please help

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