What is the reaction that takes place when Nitric Acid is exposed to moisture in air ?

Asked by pritish_kul2 | 30th Mar, 2011, 12:00: AM

Expert Answer:

Dear Student
The pure acid tends to give off white fumes when exposed to air, acid with dissolved nitrogen dioxide gives off reddish-brown vapors, leading to the common name "red fuming acid" or "fuming nitric acid".
4 HNO3 → 2 H2O + 4 NO2 + O2
We hope that clarifies your query.

Answered by  | 3rd Apr, 2011, 05:15: PM

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