Decomposition of Sodium Azide (Airbag Reaction)

2NaN₃ → 2Na + 3N₂

Tổng quan

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.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Sodium Azide NaN₃	2	(s)
Sản phẩm	Sodium Na	2	(s)
Sản phẩm	Nitrogen N	3	(g)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

Sodium azide is the key component of automotive airbag inflators. Over 100 million airbags are produced annually. The reaction's speed and gas volume are precisely engineered for occupant safety.

Tính chất

Loại: Decomposition
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -42,6 kJ/mol

Phản ứng liên quan

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.