# What must be present for combustion to be initiated and sustained?

Mar 9, 2017

Well $\text{dioxygen gas}$ for a start........................

#### Explanation:

And then some sort of combustible fuel; a good example is methane gas:

$C {H}_{4} \left(g\right) + 2 {O}_{2} \left(g\right) \rightarrow C {O}_{2} \left(g\right) + 2 {H}_{2} O \left(l\right) + \Delta$

The energy released upon formation of strong $C = O$ and $O - H$ bonds is greater than the energy required to break (less) strong $C - H$ and $O = O$ bonds.

Of course, some means to initiate the reaction must be present, and modern gas stoves (usually) have an electronic ignition to start the cooking.