What mass of calcium oxide will be obtained from the decomposition of 45 g of calcium carbonate?

| May 9, 2021 | education

What mass of calcium oxide will be obtained from the decomposition of 45 g of calcium carbonate? In the reaction, the equation of which is 3HNO3 + Al (OH) 3 = Al (NO3) 3 + 3H2O, 3 mol of acid enter. The result is salt in the amount of substance

The decomposition reaction of calcium carbonate when heated is described by the following chemical equation:

CaCO3 = CaO + CO2 ↑;

Let’s calculate 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 = 45/100 = 0.45 mol;

The same molar amounts of calcium oxide and carbon dioxide can theoretically be obtained.

Find 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 0.45 = 25.2 grams;

As a result of the reaction, trivalent aluminum nitrate is synthesized. Therefore, 3 moles of acid will result in 1 mole of salt.



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