P₂O₅ + 6KOH = 2K₃PO₄ + 3H₂N₂O₅ + 2NaOH = 2NaNO₃ + H₂2NH₃ + 3FeO = 3Fe + 3H₂O + N2H₃PO₄ + 3Ca(OH)₂ = Ca₃(PO₄)₂ + 6H₂2Al₂O₃ + 3H₂SO₄ = Al₂(SO₄)₃ + 3H₂O
P₂O₅ + 6KOH = 2K₃PO₄ + 3H₂
N₂O₅ + 2NaOH = 2NaNO₃ + H₂
2NH₃ + 3FeO = 3Fe + 3H₂O + N
2H₃PO₄ + 3Ca(OH)₂ = Ca₃(PO₄)₂ + 6H₂
2Al₂O₃ + 3H₂SO₄ = Al₂(SO₄)₃ + 3H₂O