What mass of calcium oxide and what volume of carbon dioxide

What mass of calcium oxide and what volume of carbon dioxide can be obtained from the decomposition of calcium carbonate weighing 250 g?

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, we divide its weight by the mass of 1 mole of the substance.

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

N CaCO3 = 250/100 = 2.5 mol;

The same molar amounts of calcium oxide and 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 = 2.5 x 22.4 = 56 liters;

Let’s calculate the mass of calcium oxide. To do this, multiply the amount of the substance by the weight of 1 mole of the substance.

M CaO = 40 + 16 = 56 grams / mol;

m CaO = 56 x 2.5 = 140 grams;