Chemistry Help II?

Sodium azide, NaN3(s), is used to inflate airbags. On impact, the sodium azide is ignited by an electrical spark producing nitrogen gas and solid sodium. The Nitrogen gas inflates the airbag.

6. Assume the airbag contained equal amounts of nitrogen and oxygen. Which gas would leave the bag faster if a small hole was in the bag? Provide the name for this concept.

7. Identify the chemical bonds involved witht he chemicals indicated below; Sodium azide, nitrogen, sodium.

8. Molecular structure for nitrogen? Molecular geometry? Polar or nonpolar?

9. Which of the chemicals from above, when dissolved in water, could conduct electricity? Explain.

Thanks

Answer:
N2 weighs 28, O2 weighs 32. The nitrogen would leave faster. Graham's Law of Effusion, often shortened to Graham's Law.

NaN3 - in N3-, there are covalent bonds, there is an ionic bond between Na+ and N3-
N2 - a triple, covalent bond
Na - a piece of metallic sodium has metallic bonds between the Na atoms

nitrogen's dot diagram is
:N:::N:
That triple bond is composed of one sigma and two pi bonds. Each nitrogen's hydridization is sp.
The molecular genometry is linear and it is a nonpolar molecule.

Sodium azide, it's ionic and quite soluble in water. You need ions in solution in order for a current to be conducted.

By the way, the solid sodium in the air bag might cause problems, but see near the end of this page:

http://en.wikipedia.org/wiki/sodium_azid...

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Chemistry Help II?

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