Question

Which of the following is used in vehicles for the inflation of airbags?

• A. Li\(_3\)N
• B. Na\(_3\)N
• C. Ca\(_3\)N
• D. Pb(N\(_3\))\(_2\)

Hint:

Lithium nitride (Li\(_3\)N) is commonly used for the generation of nitrogen gas in airbags, replacing older, less efficient compounds.

Answer 1

The Correct Option is A

Step 1: Use of Nitrogen Compounds in Airbags.
Airbags in vehicles are inflated using nitrogen gas, which is generated by the decomposition of sodium azide (NaN\(_3\)) in older systems. However, newer systems use lithium nitride (Li\(_3\)N) for safer and more efficient gas generation. Upon decomposition, lithium nitride produces nitrogen gas (N\(_2\)), which inflates the airbags instantly.

Step 2: Analyzing the Options.
- (1) Li\(_3\)N is the correct choice, as it is used in modern airbags for nitrogen generation. - (2) Na\(_3\)N is not used in airbags. - (3) Ca\(_3\)N is not commonly used for airbags. - (4) Pb(N\(_3\))\(_2\) is not used in airbags.

Step 3: Conclusion.
The correct compound used in airbag inflation is Li\(_3\)N, which corresponds to option (1).