Calculate the amount of oxygen required to burn 1 kg coal containing 0.96 mass fractions of pure carbon.

The oxidation reaction of carbon is described by the following chemical reaction equation:

C + O2 = CO2;

Carbon reacts with oxygen in the same molar ratio.

The same amount of carbon dioxide will be synthesized.

Let us determine the chemical amount of a substance contained in 1000 grams of carbon containing 0.96 mass fractions of pure carbon.

To do this, divide the weight of the substance by the weight of 1 mole of the substance.

M C = 12 grams / mol;

N C = 1000 x 0.96 / 12 = 80 mol;

To oxidize such an amount of a substance, 80 moles of oxygen are needed.

Let’s calculate its volume.

To do this, multiply the amount of substance by the volume of 1 mole of gas (22.4 liters).

V O2 = 80 x 22.4 = 1792 liters;