Question
Tue December 11, 2012 By: Priyanshi Shrivastava

balance the given equation HNO3 + I2 -> HIO3+NO2

Expert Reply
Wed December 12, 2012
Using half-reactions:

I2 --> 2HIO3 
1(I2) + 6(H2O) = 2(HIO3) + 10(H+) + 10(e-)
 
HNO3 ----> NO2
1(HNO3) + 1(e-) + 1(H+) = 1(NO2) + 1(H2O)

Multiplying the second half reaction by 10 (to cancel out the electrons) yields,

I+ 10HNO= 2HIO3 + 10NO2 + 4H2O
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