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How do the airbags installed in the dashboard of your car work ? |
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Answer» Solution :When accident occurs, the sensor provided in the car detects the collision. It sends an electrical signal which overheats and ignites sodium azide `(NaH_(3))` placed in the airbag. Sodium azide is a fast burning fuel that produces large amounts of `N_(2)` gas which goes through FILTERS and fills the NYLON airbag. The airbag then hits your head and protects you from injury. `2NaN_(3) rArr 2 Na + 3 N_(2)` After your head hits the nitrogen filled bag, it deflates by releasing the gas through tiny holes. The cloud of SMOKE that fills the vehicle is actually talcum powser or corn starch. The powder prevents the bag from sticking to itself, while it is folded inside the car. The `N_(2)` gas that is released is absolutely harmless because `N_(2)` constitutes about 79% of the air that we inhale. One just needs to open the doors or windows for the gas and powder to ESCAPE. |
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