1) FeCl+KOH= Fe( OH)₃+3KCL
Fe³⁺+3Cl⁻+3K⁺+3OH⁻---- Fe ( OH)₂+3K⁺+3Cl
Fe³⁺+3OH⁻---- Fe ( OH )₃
2) CuSO4+BaCl--- CuCl₂+BaSO4
SO₄²⁻+Ba²⁺--- BaSO4
3) AgNO₃+ NaCl= AgCl+NaNo₃
NO3²⁻+Na²⁺---- NaNO₃
4) Na₂CO₃+HCl= NaCl+H₂O+CO₂
CO₃²⁻+2H⁺---- H₂O+CO₂
5) CaC0₃+HCl--- CaCl₂+H₂O+CO₂
CaCO₃+2H⁺---- Ca²⁺+ H₂O+CO₂
6) AlCl₃+NaOH---- 3NaCl+Al ( OH )₃ ( осадок )
Al⁺³+3Cl⁻+3Na⁺+3OH⁻= 3Na⁺+3Cl⁻+Al (OH)₃
Al⁺³+3OH⁻= Al ( OH )₃- краткое ионное уравнение
7) Al (OH)₃+H₂SO₄--- AlSO₄+ H₂O
Al²+ ( OH )⁻+2H+SO₄²⁻---- Al²⁺ + SO²₄+H₂O
Al²⁺ (OH⁻)₃+ 2H--- Al²⁺+H₂O