FeCI₃ + 3NaOH = Fe(OH)₃↓ + 3NaCI
Fe³⁺+3CI⁻ + 3Na⁺+3OH⁻ = Fe(OH)₃↓ + 3Na⁺+3CI⁻
Fe³⁺+3OH⁻ = Fe(OH)₃↓
CuSO₄ + BaCI₂=CuCI₂ + BaSO₄↓
Cu²⁺+ SO₄²⁻ + Ba²⁺+ 2CI⁻= Cu²⁺+2CI⁻ + BaSO₄↓
SO₄²⁻ + Ba²⁺= BaSO₄↓
MgCI₂ + Na₂CO₃ = MgCO₃↓ + 2NaCI
Mg²⁺+2CI⁻ + 2Na⁺+CO₃²⁻ = MgCO₃↓ + 2Na⁺+2CI⁻
Mg²⁺+ CO₃²⁻ = MgCO₃↓