Ca+2HCI=CaCI2+H2 CaO+2HCI=CaCI2+H2O CaCO3+2HCI=CaCI2+CO2+H2O
Ca+2HCl= CaCl2+H2 CaO+2HCl= CaCl2+H2O Ca(OH)2+2HCl= CaCl2+2H2O