Question

Balance the equation below:

NO2(g) + H2O(l) + O2(g) → 4HNO3(aq)

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Answer 1

Explanation:

This is an oxidation-reduction (redox) reaction:

4 NIV - 4 e- → 4 NV (oxidation)

2 O0 + 4 e- → 2 O-II (reduction)

NO2 is a reducing agent, O2 is an oxidizing agent.