Write the equation of the transition reactions: Ca – CaO – Ca (OH) 2 – CaSO4

To carry out the above chain of transformations, it is necessary to carry out the following three reactions:

Chemical reaction and equation As a result of this reaction, calcium oxide is formed. We write the chemical equation of the reaction as follows:

2 Ca + O2 = 2 CaO

Next, we produce the reaction of interaction of calcium oxide and water. As a result of the reaction, bivalent calcium hydroxide is formed. The molecular equation of the reaction can be written as follows:

CaO + H2O = Ca (OH) 2

The third reaction is the reaction of obtaining calcium sulfate salt from calcium hydroxide. To do this, we need to add sulfuric acid to calcium hydroxide. The above salt and water are formed. We write the chemical equation of the reaction as follows:

Ca (OH) 2 + H2SO4 = CaSO4 + H2O.