2NaOH + 2H₂O + Zn = Na₂[Zn(OH)₂] + H₂2K + H₂ = 2KHKH + H₂O = KOH + H₂, 2KOH + CO₂ = K₂CO₃ + H₂OK₂CO₃ + 2HCl = 2KCl + CO₂ + H₂O2KMnO₄ + 16HCl = 5Cl₂ + 2KCl + 2MnCl₂ + 8H₂O3Cl₂ + 6KOH = KClO₃ + 5KCl + 3H₂O2KClO₃ = 2KCl + 3O₂KCl + AgNO₃ = KNO₃ + AgCl2ZnS + 3O₂ = 2SO₂ + 2ZnOSO₂ = S + O₂Cu + S = CuS2CuS + 3O₂ = 2CuO + 2SO₂2AgNO₃ = O₂ + 2Ag + 2NO₂O₂ + 2SO₂ = 2SO₃SO₃ + H₂O = H₂SO₄H₂SO₄ + 3H₂S = 4S + 4H₂ONH₄NO₂ = N₂ + 2H₂ON₂ + 3H₂ = 2NH₃NH₃ + HNO₃ = NH₄NO₃NH₄NO₃ = N₂O + 2H₂OH3PO4--NH4H2PO4--Na3PO4--Ca3(PO4)2--PH₃PO₄ + NH₃ = NH₄H₂PO₄NH₄H₂PO₄ + 3NaOH = Na₃PO₄ + NH₃ + 3H₂O2Na₃PO₄ + 3CaCl₂ = Ca₃(PO₄)₂ + 6NaCl2Ca₃(PO₄)₂ + 10C + 6SiO₂ = 4P + 6CaSiO₃ + 10CO