Ca+2H2O=Ca(OH)2+H2^
Ca(OH)2+HCl=CaCl2+H2O
CaCl2+CO2+H2O=CaCO3+HCl
Mg+2HCl=MgCl2+H2^
MgCl2+2H2O=Mg(OH)2+2HCl
Mg(OH)2+H2SO4=MgSO4+2H2O
Ca+2H2O=Ca(OH)2+H2^
Ca(OH)2+HCl=CaCl2+H2O
CaCl2+CO2+H2O=CaCO3+HCl
Mg+2HCl=MgCl2+H2^
MgCl2+2H2O=Mg(OH)2+2HCl
Mg(OH)2+H2SO4=MgSO4+2H2O