Ca + O2 → CaO
CaO + H2O → Ca(OH)2
Ca(OH)2 + 2HCl → CaCl2 + 2H2O
CaCl2 + Na2SO4 → CaSO4 + 2NaCl
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Ca + O2 → CaO
CaO + H2O → Ca(OH)2
Ca(OH)2 + 2HCl → CaCl2 + 2H2O
CaCl2 + Na2SO4 → CaSO4 + 2NaCl