Calculate the mass of calcium oxide formed when heating limestone weighing 600 g with a mass fraction of CaCO3 80%.
September 4, 2021 | education
| The decomposition reaction of limestone is described by the following chemical reaction equation:
CaCO3 = CaO + CO2;
The decomposition of 1 mol of limestone synthesizes 1 mol of gaseous carbon dioxide.
This also synthesizes 1 mol of calcium oxide
Let’s calculate the available chemical amount of calcium carbonate substance.
M CaCO3 = 40 + 12 + 16 x 3 = 100 grams / mol;
N CaCO3 = 600 x 0.8 / 100 = 4.8 mol;
During the reaction, 4.8 mol of calcium oxide will be synthesized.
N CaO = 4.8 mol;
Its weight will be:
M CaO = 40 + 16 = 56 grams / mol;
m CaO = 56 x 4.8 = 268.8 grams;
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