C+2Cl₂=CCl₄
2Al₂S₃+9O₂=2Al₂O₃+6SO₂
2CuS+3O₂=2CuO+2SO₂
Al₂O₃+3H₂=2Al+3H₂O
Zn+2HCl=ZnCl₂+H₂
5Na₂SO₃+2KJO₃+H₂SO₄=J₂+5Na₂SO₄+K₂SO₄+H₂O
2KBr+2KMnO₄+2H₂SO₄=Br₂+2MnSO₄+2K₂SO₄+2H₂O