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September 1, 2014

Homework Help: Chemistry: check answers

Posted by Jack on Friday, March 22, 2013 at 6:12pm.

Please check. Thank you.

2.
What is the reduction half-reaction for the following unbalanced redox equation?
Cr2O72 + NH4+ Cr2O3 + N2

A.) Cr2O3 -> Cr2O72
B.) Cr2O72 -> Cr2O3
C.) NH4+ -> N2
D.) N2 -> NH4+






3.
Which oxidation-reduction reactions are best balanced by the half-reaction method?

A.) covalent reactions
B.) acid-base reactions
C.) ionic reactions
D.) intermolecular reactions

Thank You.

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