HOW DOES AN AIR BAG SAVES THE LIFE

An AIR BAG is an life saving device that avails itself, in half the time that we take to blink. This airbag employs on a series of chemical reactions but actually there is not air filled.  

LETS EXPLORE THE CHEMICAL ENGINEERING BEHIND THIS LIFE SAVING ACTION....

Magical engineering behind the instantaneous explosion of airbags is a reaction, where 130 grams of sodium azide produces 67 litres of NITROGEN gas in just 30 milliseconds. As the Nitrogen is an inert gas (a gas does not react with any), it will never harm anything. 

This whole reaction is initiated by a small ignition detonated by 'squib', triggered by the collision sensors.

The reaction is,

2NaN_{3 ------------->}  2Na + 3N₂

If you need to explore the experience of Airbag at you home step,

1. Take a tablespoon of Baking soda
2. Mix a few drops of lemon juice to it
3. You will be witnessing the effervescence 
4. It is due to the reaction of citric acid in lemon with alkaline baking soda leads to the evolution of baking carbon-di-oxide.

Acid + Baking soda ------> Carbon-di-oxide + Water + Sodium salt

Sinking deep in,

H⁺ + NaHCO_{2  ---------->} CO₂ + H₂O + Na⁺

^NOTE

KIDS ARE NOT SUGGESTED TO DO THE EXPERIMENT.

THOSE WHO DOING THE EXPERIMENT, PLEASE ENSURE THE SAFETY ASPECTS AS PRIMARY!!!