Mg²⁺ + CO₃²⁻ = MgCO₃↓
Mg²⁺ + 2NO₃⁻ + 2K⁺ + CO₃²⁻ = MgCO₃↓ + 2K⁺ + 2NO₃⁻
Mg(NO₃)₂ + K₂CO₃ = MgCO₃↓ + 2KNO₃
H⁺ + OH⁻ =H₂O
H⁺ + Cl⁻ + Na⁺ + OH⁻ = Na⁺ + Cl⁻ + H₂O
HCl + NaOH = NaCl + H₂O
Fe(OH)₃ + 3H⁺ = Fe³⁺ + 3H₂O
Fe(OH)₃ + 3H⁺ + 2NO₃⁻ = Fe³⁺ + 2NO₃⁻ + 3H₂O
Fe(OH)₃ + 3HNO₃ = Fe(NO₃)₃ + 3H₂O