How much co2 can be obtained from the decomposition of 200 g of limestone containing 20% of impurities?
July 24, 2021 | education
| The decomposition reaction of calcium carbonate is described by the following chemical reaction equation:
CaCO3 = CaO + CO2;
From one mole of calcium carbonate, one mole of calcium oxide and carbon monoxide is formed.
Determine the mass of pure calcium carbonate.
m CaCO3 = 200 x 90% = 180 grams;
Determine the amount of substance in 180 grams of calcium carbonate.
Its molar mass is:
M CaCO3 = 40 + 12 + 16 x 3 = 100 grams / mol;
The amount of the substance will be:
N CaCO3 = 180/100 = 1.8 mol;
The same amount of carbon monoxide and calcium oxide will be obtained.
Under normal conditions, one mole of ideal gas takes up a volume of 22.4 liters.
Let’s determine the volume of carbon dioxide:
V CO2 = 1.8 x 22.4 = 40.32 liters;
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