Question

in complete combustion of fuels leads to formation of ...........​

Answer 1

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${\bf{Carbon\:monoxide}}$

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Answer 2

The products made by the combustion of all sorts of fuels can be identified using the method of fire triangle.

The fire triangle is basically a symbol to show the elements required for combustion:

1. Oxygen
2. Fuel
3. Heat

Fuels are substances which when burned in presence of oxygen release heat hence its an exothermic reaction. The amount of oxygen provided is a vital element in the process of combustion.

Examples of Complete combustion:

• methane + oxygen → carbon dioxide + water

         CH4 + 2O2 → CO2 + 2H2O

• propane + oxygen → carbon dioxide + water

       C3H8 + 5O2 → 3CO2 + 4H2O

• ethanol + oxygen → carbon dioxide + water

        C2H5OH + 3O2 → 2CO2 + 3H2O

Hence we can notice that , in the case where there is complete combustion, the major products are carbon dioxide and water.