How many grams of calcium oxide will be obtained from the decomposition of 250 g

How many grams of calcium oxide will be obtained from the decomposition of 250 g of calcium carbonate. How much carbon dioxide will be released?

The decomposition reaction of calcium carbonate when heated is described by the following chemical 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 weight of calcium oxide. To do this, we 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;