Write the reaction equations: Ca-CaO-Ca (OH) 2-CaCO3-CaCl2

1) 2Ca + O2 = 2CaO

2) CaO + H2O = Ca(OH)2

3) Ca(OH)2 + CO2 = CaCO3 + H2O

4) CaCO3 + 2HCl = CaCl2 + H2O + CO2^

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