Chemical reaction: SrCO₃(s)+H₂SO₄(aq) → SrSO₄(s) +CO₂(g)+H₂O(l).
Ionic reaction: SrCO₃ + 2H⁺ + SO₄²⁻ → SrSO₄ + CO₂ + H₂O.
Strontium carbonate and strontium sulfate are salts insoluble in water. Sulfuric acid is strong acid. Carbone dioxide is gas, not dissolve in water. Water is a molecular liquid.