Decomposition of Sodium Azide (Airbag Reaction)

2NaN3 → 2Na + 3N2

概要

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.

参加者

役割 物質 係数 状態
反応物 Sodium Azide NaN₃ 2 (s)
生成物 Sodium Na 2 (s)
生成物 Nitrogen N 3 (g)

日常の例

When you see an airbag deploy in a car crash, the bag is inflated by nitrogen gas from the rapid decomposition of sodium azide.

産業上の重要性

アジ化ナトリウムは自動車エアバッグインフレーターの主要成分です。年間1億個以上のエアバッグが生産されています。反応の速度とガス量は乗員の安全のために精密に設計されています。

特性

タイプ
Decomposition
可逆的
いいえ
エネルギー
発熱性
ΔH
-42.6 kJ/mol

関連する反応

Decomposition of Ammonium Nitrate Decomposition of Calcium Hypochlorite Decomposition of Carbonic Acid Decomposition of Iron(II,III) Oxide (Direct Reduction) Decomposition of Nitrous Oxide (Laughing Gas) Decomposition of Barium Peroxide Decomposition of Sodium Bicarbonate Decomposition of Water (Electrolysis) Thermal Decomposition of Copper(II) Carbonate Cracking of Octane (Thermal Cracking)

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.