2Mg + O₂ = 2MgO MgO + H₂O = Mg(OH)₂ Mg(OH)₂ + H₂SO₄ = MgSO₄ + 2H₂O MgO + 2HCl = MgCl₂ + H₂O
1)2Mg+O2=2MgO 2)MgO+H2O=Mg(OH)2 3)Mg(OH)2+H2SO4=MgSO4+2H2O 4)MgO+2HCl=MgCl2+H2O