6, 2H₂O+4Fe(OH)₂+O₂+2H₂O →4Fe(OH)₃

 7, FeCl₂+2NaOH→2NaCl+Fe(OH)₂

8, MnO₂+4HBr→Br₂+MnBr₂ +  2H₂O

9, Cl₂+SO_{2 +2H2O} →+2HCl+H₂SO

 10, Ca(OH)₂+2NH₄NO₃→Ca(NO₃)₂+2H₂O+2NH₄

11, Ca(H₂PO₄)₂+Ca(OH)₂→2H₂O+2CaHPO₄

12, 4CxHy(COOH)₂+(2x+y+2)O₂→ (2y+4)H₂O + (4x+8)CO₂

13, 2KHCO₃+Ca(OH)_2(d)+→CaCO₃+2H₂O+K₂CO₃

14, Al₂O₃ + 6KHSO₄ → Al₂₍SO4) ₃+ 3H₂O + 3K₂SO₄

15, xFe₂O₃ +(3x-2y) H₂  → 2FexOy+(3x-2y)H₂O

16, NaHSO₄+BaCO₃→H₂O+Na₂SO₄+CO₂+BaSO₄

6, 2H2O+4Fe(OH)2+O2+2H2O →4Fe(OH)3

 7, FeCl2+2NaOH→2NaCl+Fe(OH)2

8, MnO2+4HBr→Br2+MnBr2 +  2H2O

9, Cl2+SO2+2H2O→2HCl+H2SO

 10, Ca(OH)2+2NH4NO3→Ca(NO3)2+2H2O+2NH4

11, Ca(H2PO4)2+Ca(OH)2→2H2O+2CaHPO4

12, 4CxHy(COOH)2+(2x+y+2)O2→ (2y+4)H₂O + (4x+8)CO2

13, 2KHCO3+Ca(OH)2+→CaCO3+2H2O+K2CO3

14, Al2O3 + 6KHSO4 → Al2(SO4)3+ 3H2O + 3K2SO4

15, xFe2O3+(3x-2y)H2  → 2FexOy+(3x-2y)H2O

16, NaHSO4+BaCO3→H2O+Na2SO4+CO2+BaSO4