What is the mass of calcium oxide and how much carbon dioxide is produced by the decomposition

| April 15, 2021 | education

What is the mass of calcium oxide and how much carbon dioxide is produced by the decomposition of 20 grams of calcium carbonate?

The decomposition reaction of limestone is described by the following chemical reaction equation:

CaCO3 = CaO + CO2;

When 1 mol of limestone is decomposed, 1 mol of gaseous carbon dioxide is synthesized.

Let’s calculate the available chemical amount of calcium carbonate substance.

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

N CaCO3 = 20/100 = 0.2 mol;

This amount of calcium oxide will be synthesized.

Let’s calculate the weight of 0.2 mol of calcium oxide. To do this, we multiply the amount of the substance by its molar weight.

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

m CaO = 56 x 0.2 = 11.2 grams;

Calcium oxide will weigh 11.2 grams.



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