Decomposition of Sodium Azide (Airbag Reaction)
2NaN3 → 2Na + 3N2
Visão geral
Sodium azide rapidly decomposes when ignited to produce sodium metal and nitrogen gas. This extremely fast reaction (completing in about 40 milliseconds) is the primary gas-generating reaction in automobile airbags. The large volume of nitrogen gas produced instantly inflates the airbag.
Participantes
| Papel | Substância | Coeficiente | Estado |
|---|---|---|---|
| Reagente | Sodium Azide NaN₃ | 2 | (s) |
| Produto | Sodium Na | 2 | (s) |
| Produto | Nitrogen N | 3 | (g) |
Exemplo do cotidiano
When you see an airbag deploy in a car crash, the bag is inflated by nitrogen gas from the rapid decomposition of sodium azide.
Importância industrial
A azida de sódio é o componente-chave dos insufladores de airbags automóveis. São produzidos anualmente mais de 100 milhões de airbags. A velocidade e o volume de gás da reação são rigorosamente engenheirados para a segurança dos ocupantes.
Propriedades
- Tipo
- Decomposition
- Reversível
- Não
- Energia
- Exotérmico
- ΔH
- -42,6 kJ/mol
Reações relacionadas
Decomposition of Calcium Hypochlorite
Decomposition of Carbonic Acid
Decomposition of Nitrous Oxide (Laughing Gas)
Decomposition of Barium Peroxide
Decomposition of Sodium Bicarbonate
Decomposition of Water (Electrolysis)
Decomposition of Silver Chloride (Photodecomposition)
Thermal Decomposition of Lead(IV) Oxide
Decomposition of Hydrogen Peroxide
Decomposition of Ammonium Nitrate
Frequently Asked Questions
What is the equation for Decomposition of Sodium Azide (Airbag Reaction)?
The balanced equation is: 2NaN₃ → 2Na + 3N₂.
What type of reaction is Decomposition of Sodium Azide (Airbag Reaction)?
Decomposition of Sodium Azide (Airbag Reaction) is a decomposition reaction.
Is Decomposition of Sodium Azide (Airbag Reaction) exothermic or endothermic?
Decomposition of Sodium Azide (Airbag Reaction) is exothermic (releases energy). The enthalpy change (ΔH) is -42.6 kJ/mol.