Question

What is the chemical formula for fire?

Answer 1

Hint: Fire is the heat and light generated by the combination of oxygen and many other materials. The flame which produces the light, is made up of glowing particles and luminous gases. Fire is the end result of a reaction known as Combustion reaction. We will discuss more about fire and its properties and how it is generated in this question.

Complete answer:
Fire is the visual result of the Combustion reaction which occurs between some type of fuel and oxygen in the air. The flames are produced when combustion reaction reaches a specific point which is known as Ignition point. Flames are generally made up of oxygen, carbon dioxide, nitrogen and water vapour. Let’s see the reaction
\[C{H_4} + 2{O_2} \to C{O_2} + 2{H_2}O\]
This combustion reaction releases heat so it is exothermic in nature. This continues until concentration of a reactant reaches end. As we can see fire does not have a formula it is the result of a reaction.
There are two types of combustion, when the burning fuel produces only water and carbon dioxide as products it is known as complete combustion. The flames in complete combustion have a blue light colour. when burning fuel produces extra product like smoke then it is known as incomplete combustion, flames in this case are red and orange.

Note:
A common example of Complete combustion can be seen in our homes. The gas flame we use for cooking is generally blue in colour. Example of incomplete combustion is fire in the forests, it is red or orange in colour which makes a large amount of smoke and other products.