How much sodium azide is required to produce the amount of nitrogen needed to inflate a normal sized airbag?

How much sodium azide is required to produce the amount of nitrogen needed to inflate a normal sized airbag?

The Air bag volume (N2) is ~ 70 L. This requires ~130 grams of sodium azide.

What produces nitrogen gas and sodium?

Chemical Reactions Used to Generate the Gas Sodium azide (NaN3) can decompose at 300oC to produce sodium metal (Na) and nitrogen gas (N2).

What mass in grams of sodium azide must react to produce that amount of nitrogen gas?

Automotive air bags inflate when sodium azide, NaN3, rapidly decomposed into N2 and Na by the following reaction: 2 NaN3 –> 2 Na + 3 N2. In order to fill an air bag, 75.0 grams of N2 must be formed.

What happens when sodium azide is heated?

Sodium Azide, NaN3, mol wt 65.02, CAS Number 26628-22-8, is a colorless, odorless, crystalline solid (salt-like) or solution. When it is heated from 275 to 330 degree Celsius in dry air, the solid crystals will violently decompose into nitrogen gas, leaving a residue of sodium oxide.

What mass of sodium azide is required to provide the nitrogen?

Answer: 43.35 g of sodium azide are required to produce 28.0 g of nitrogen.

Why is the amount of sodium azide in the air bags so important?

A handful (130 grams) of sodium azide will produce 67 liters of nitrogen gas–which is enough to inflate a normal air bag. Sodium is a very reactive metal that will react rapidly with water to form sodium hydroxide; as a result, it would be quite harmful if it got into your eyes, nose or mouth.

How is nitrogen produced commercially?

Commercial production of nitrogen is largely by fractional distillation of liquefied air. Nitrogen can also be produced on a large scale by burning carbon or hydrocarbons in air and separating the resulting carbon dioxide and water from the residual nitrogen.

When sodium azide NaN3 decomposes what happens to the sodium metal that is produced?

Sodium azide decomposes to produce nitrogen gas and sodium metal. The sodium produced reacts immediately with the potassium nitrate producing more nitrogen. The total number of moles of nitrogen produced by 1.0 mol of sodium azide in this sequence is 1.6.

How is sodium azide produced?

Preparation: sodium azide is prepared industrially from metallic sodium and ammonia to form the sodium amine (I). In a second step (II), the primary amine formed, reacts with nitrous oxide to produce sodium azide, ammonia and sodium hydroxide (that is found as sodium and hydroxyl ions because it is a strong base).

What happens when sodium azide is subjected to thermal decomposition?

Thermal decomposition of sodium azide gives dinitrogen gas. Dinitrogen (N2) IS formed by sharing three electron pairs between two nitrogen atoms. The two nitrogen atoms are joined by triple bond(N≡N).

Why do we use sodium azide in airbags?

Sodium azide is best known as the chemical found in automobile airbags. An electrical charge triggered by automobile impact causes sodium azide to explode and convert to nitrogen gas inside the airbag. Sodium azide is used as a chemical preservative in hospitals and laboratories.