Nitric acid solutions slowly turn brown when exposed to sunlight.Which of the following reactions is responsible?
A) NO3−(aq) → NO(g) + O2(g)
B) 2NO3−(aq) → 2NO2(g) + O2(g)
C) 2H+(aq) + NO3−(aq) → NO2(g) + H2O(l)
D) 4H+(aq) + 4NO3−(aq) → 4NO2(g) + 2H2O(l) + O2(g)
E) 4H+(aq) + NO3−(aq) → NO(g) + 2H2(g) + O2(g)
Correct Answer:
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