KCl + AgNO₃ = AgCl + KNO₃
2KNO₃ + H₂SO₄ конц = K₂SO₄ + 2HNO₃
SO₃ + H₂O = H₂SO₄
Al₂O₃ + 3H₂SO₄ =Al₂(SO₄)₃ + 3H₂O
Al₂(SO₄)₃ + 6NaOH = 2Al(OH)₃ + 3Na₂SO₄
4P + 5O₂ = 2P₂O₅
P₂O₅ + 3H₂O = 2H₃PO₄
H₃PO₄ + Na₂HPO₄ = 2NaH₂PO₄
NaH₂PO₄ + NaOH = Na₂HPO₄ + H₂O
