Thermal decomposition of 10 g of calcium carbonate produced 1.68 liters of carbon dioxide.

Thermal decomposition of 10 g of calcium carbonate produced 1.68 liters of carbon dioxide. Calculate the volume fraction of the reaction product yield.

The thermal decomposition reaction of calcium carbonate is described by the following chemical reaction equation:

CaCO3 = CaO + CO2 ↑;

Find the chemical amount of calcium carbonate (limestone). To do this, divide its weight by the mass of 1 mole of the substance.

M CaCO3 = 40 + 12 + 16 x 3 = 100 grams / mol;

N CaCO3 = 10/100 = 0.1 mol;

The same molar amount of carbon dioxide can theoretically be obtained.

To find its volume, you need to multiply the amount of substance by the volume of 1 mole of gas (which is 22.4 liters).

V CO2 = 0.1 x 22.4 = 2.24 liters;

The volume fraction of the reaction yield will be:

K = 1.68 / 2.24 = 0.75 = 75%;