Movie | Title | Movie | Caption | The decomposition of sodium azide causes an airbag in an automobile to inflate. | Notes | Animation: Airbags (**) A decomposition reaction involving NaN3 is used to inflate airbags in automobiles. When a collision occurs a hot piece of metal causes an explosive reaction which forms N2 gas. The N2 gas formed causes the rapid inflation of the airbag. As the airbag cools, the N2 gas contracts, causing the airbag to shrink, releasing the passenger. This animation also illustrates Charles' law and the stoichiometry of gases. | |