Answer to Question #348451 in General Chemistry for ngoma

Question #348451

1. Iodic acid, HIO3, can be prepared by reacting iodine, I2, with concentrated nitric acid. The skeleton equation is: I2(s) + NO3 - (aq) → IO3 - (aq) + NO2(g). Balance this equation using the half reaction method.


1
Expert's answer
2022-06-06T17:09:05-0400

Solution:

Unbalanced chemical equation: I2(s) + NO3(aq) → IO3(aq) + NO2(g)

Oxidation half-reaction:

I20 + 6H2O − 10e → 2IO3 + 12H+

Reduction half-reaction:

NO3 + 2H+ + e− → NO2 + H2O

Net reaction:

I20 + 10NO3 + 8H+ → 2IO3 + 10NO2 + 4H2O

Balanced chemical equation: I2(s) + 10NO3(aq) + 8H+(aq) → 2IO3(aq) + 10NO2(g) + 4H2O(l)


I2(s) acts as reducing agent

NO3(aq) acts as oxidizing agent


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