2Ca+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HNO3=Ca(NO3)2+2H2O
Ca²⁺ +2OH⁻ + 2H⁺ + 2NO₃⁻ =Ca²⁺ + 2NO₃⁻ + 2H2O
+2OH⁻ + 2H⁺ =+ 2H2O
2Mg+O2=2MgO
MgO+2HCl=MgCl2+H2O
MgO + 2H⁺ + 2Cl⁻ = Mg²⁺ + 2Cl⁻ + H2O
MgO + 2H⁺ = Mg²⁺ + H2O
MgCl2+2NaOH=Mg(OH)2+2NaCl
Mg²⁺ + 2Cl⁻ + 2Na⁺ + 2OH⁻ =Mg(OH)2 + 2Na⁺ + 2Cl⁻
Mg²⁺ + 2OH⁻ =Mg(OH)2
Mg(OH)2+2HNO3=Mg(NO3)2+2H2O
Mg²⁺ +2OH⁻ + 2H⁺ + 2NO₃⁻ =Mg²⁺ + 2NO₃⁻ + 2H2O
+2OH⁻ + 2H⁺ =+ 2H2O