3NaOH + FeCI₃ = Fe(OH)₃↓ + 3NaCI
3Na⁺ + 3OH⁻ + Fe³⁺ + 3CI⁻ = Fe(OH)₃↓ + 3Na⁺ + 3CI⁻
3OH⁻ + Fe³⁺ = Fe(OH)₃↓
CaCO₃ + 2HNO₃ = Ca(NO₃)₂ + CO₂↑ + H₂O
CaCO₃ + 2H⁺ + 2NO₃⁻ = Ca²⁺ + 2NO₃⁻ + CO₂↑ + H₂O
CaCO₃ + 2H⁺ = Ca²⁺ + CO₂↑ + H₂O
Mg(NO₃)₂ + 2KOH = Mg(OH)₂↓ + 2KNO₃
Mg²⁺ + 2NO₃⁻ + 2K⁺ + 2OH⁻ = Mg(OH)₂↓ + 2K⁺ + 2NO₃⁻
Mg²⁺ + 2OH⁻ = Mg(OH)₂↓