Write the reaction equation Ca- CaO- Ca (OH) 2- CaCL2- CaCO3- CO2

1. Make the equation for the reaction of calcium combustion. As a result, calcium oxide is formed.

2 Ca + O2 = 2CaO.

2. Calcium oxide – basic oxide, reacting with water, forms a base – calcium hydroxide.

CaO + H2O = Ca (OH) 2.

3. The reaction between calcium hydroxide and hydrochloric acid proceeds with the formation of calcium chloride and water.

Ca (OH) 2 + 2HCl = CaCl2 + 2H2O.

4.To obtain calcium carbonate from calcium chloride, let’s compose the reaction equation with carbonic acid.

CaCl2 + H2CO3 = CaCO3 + 2HCl.

5. Calcium oxide from calcium carbonate is obtained by the decomposition reaction of calcium carbonate.

CaCO3 = CaO + CO2.



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