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August 30, 2014

Homework Help: chemistry grade 12

Posted by Ron on Tuesday, November 17, 2009 at 4:29pm.

Question: Balance the following reactions by the oxidation number method.

a) I2 + HNO3 --> HIO3 + NO2 + H2O

so i have
N +5 to +4 net charge = -1
I 0 to +5 net charge = +5

i add coefficient where the oxidation number is changing.

in this case
I2 + 4HNO3 --> 2HIO3 + 4NO2 + H2O

i cant balance now.

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