1) 2Ca + O2 = 2CaO
2) CaO + H2O = Ca(OH)2
3)Ca(OH)2+2HCl=CaCl2+2H2O 4)CaCl2+H2SO4=CaSO4+2HCl
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1) 2Ca + O2 = 2CaO
2) CaO + H2O = Ca(OH)2
3)Ca(OH)2+2HCl=CaCl2+2H2O
4)CaCl2+H2SO4=CaSO4+2HCl