BaCO3↓ + 2HCl -> BaCl2 + CO2↑ + H2O — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

Step 1: Barium carbonate, BaCO3↓, is an insoluble white precipitate. Step 2: When strong hydrochloric acid (HCl) is added, it reacts with the carbonate to produce soluble barium chloride (BaCl2), water, and carbon dioxide gas (CO2↑), which escapes. Step 3: Since the insoluble precipitate dissolves to yield a clear soluble salt solution, this is a precipitate dissolution reaction (type B), matching option (b).