Ba(NO₃)₂ + K₂SO₄ = 2KNO₃ + BaSO₄
Ba²⁺ + 2NO₃⁻ + 2K⁺ + SO₄²⁻ = 2K⁺ + 2NO₃⁻ + BaSO₄
Ba²⁺ + SO₄²⁻ = BaSO₄
Al₂O₃ + 6HCl = 2AlCl₃ + 3H₂O
Al₂O₃ + 6H⁺ + 6Cl⁻ = 2Al³⁺ +6Cl⁻ + 3H₂O
Al₂O₃ + 6H⁺ = 2Al³⁺ + 3H₂O
2HNO₃ + K₂CO₃ = 2KNO₃ + H₂O + CO₂↑
2H⁺ + 2NO₃⁻ + 2K⁺ + CO₃²⁻ = 2K⁺ + 2NO₃⁻ + H₂O + CO₂↑
2H⁺ + CO₃²⁻ = H₂O + CO₂↑