Ионы CI⁻ SO₄²⁻ PO₄³⁻
Mg²⁺ MgCI₂ MgSO₄ Mg₃(PO₄)₂
Cr³⁺ CrCI₃ Cr₂(SO₄)₃ CrPO₄
Na⁺ NaCI Na₂SO₄ Na₃PO₄
Mg(OH)₂+2HCI=MgCI₂+2H₂O
Mg(OH)₂+H₂SO₄=MgSO₄+2H₂O
3Mg(OH)₂+2H₃PO₄=Mg₃(PO₄)₂+6H₂O
Cr(OH)₃+3HCI=CrCI₃+3H₂O
2Cr(OH)₃+3H₂SO₄=Cr₂(SO₄)₃+6H₂O
Cr(OH)₃+H₃PO₄=CrPO₄+3H₂O
NaOH+HCI= NaCI+H₂O
2NaOH+H₂SO₄=Na₂SO₄+2H₂O
3NaOH+H₃PO₄=Na₃PO₄+3H₂O