Formation of Nitrogen Dioxide
2NO + O2 → 2NO2
Übersicht
Nitric oxide reacts with oxygen in the atmosphere to form nitrogen dioxide, a reddish-brown toxic gas. This reaction is central to atmospheric chemistry and smog formation. It occurs rapidly at room temperature without any catalyst needed.
Teilnehmer
| Rolle | Substanz | Koeffizient | Zustand |
|---|---|---|---|
| Produkt | Nitrogen Dioxide NO₂ | 2 | (g) |
Alltägliches Beispiel
The brown haze visible over cities on smoggy days is largely due to nitrogen dioxide formed by this reaction from vehicle exhaust.
Industrielle Bedeutung
This is a key step in the Ostwald process for nitric acid production. Managing NOx emissions is a major environmental and regulatory concern for power plants and vehicles.
Eigenschaften
- Typ
- Synthesis
- Reversibel
- Ja
- Energie
- Exotherm
- ΔH
- -114,2 kJ/mol
Verwandte Reaktionen
Frequently Asked Questions
What is the equation for Formation of Nitrogen Dioxide?
The balanced equation is: 2NO + O₂ → 2NO₂.
What type of reaction is Formation of Nitrogen Dioxide?
Formation of Nitrogen Dioxide is a synthesis reaction. It is reversible under certain conditions.
Is Formation of Nitrogen Dioxide exothermic or endothermic?
Formation of Nitrogen Dioxide is exothermic (releases energy). The enthalpy change (ΔH) is -114.2 kJ/mol.