What volume of carbon dioxide is obtained by the decomposition of 200 g of calcium carbonate
June 20, 2021 | education
| What volume of carbon dioxide is obtained by the decomposition of 200 g of calcium carbonate, the mass fraction of which is 0.5 or 50%?
The decomposition reaction of calcium carbonate when heated is described by the following chemical equation:
CaCO3 = CaO + CO2 ↑;
Let’s determine the chemical amount of calcium carbonate. 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 = 200 x 0.5 / 100 = 1 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 = 1 x 22.4 = 22.4 liters;
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