Ba²⁺ + CO₃²⁻ = BaCO₃↓
2Na⁺ + CO₃²⁻ + Ba²⁺ + 2Cl⁻ = BaCO₃↓ + 2Na⁺ + 2Cl⁻
Na₂CO₃ + BaCl₂ = BaCO₃↓ + 2NaCl
Ba²⁺ + CO₃²⁻ = BaCO₃↓
2Na⁺ + CO₃²⁻ + Ba²⁺ + 2Cl⁻ = BaCO₃↓ + 2Na⁺ + 2Cl⁻
Na₂CO₃ + BaCl₂ = BaCO₃↓ + 2NaCl