`BaCO_(3)darr+2HCl to BaCl_(2)+CO_(2)uarr+H_(2)O`

Options

A. For precipitate formation formation reaction
B. For precipitate dissolution reaction
C. For precipitate exchange reaction
D. For no reaction

Answer

To determine the type of reaction represented by the equation:

\[ \text{BaCO}_3 (s) + 2 \text{HCl} \rightarrow \text{BaCl}_2 (aq) + \text{CO}_2 (g) + \text{H}_2\text{O} (l) \]

we can follow these steps:

### Step 1: Identify the Reactants and Products
- **Reactants**: Barium carbonate (BaCO₃) and hydrochloric acid (HCl).
- **Products**: Barium chloride (BaCl₂), carbon dioxide (CO₂), and water (H₂O).

### Step 2: Analyze the State of Reactants and Products
- Barium carbonate (BaCO₃) is indicated as a solid (s), which means it is a precipitate.
- Hydrochloric acid (HCl) is in aqueous solution (aq).
- Barium chloride (BaCl₂) is also in aqueous solution (aq).
- Carbon dioxide (CO₂) is a gas (g).
- Water (H₂O) is a liquid (l).

### Step 3: Determine the Type of Reaction
- Since BaCO₃ is a solid precipitate that reacts with HCl, and the products include BaCl₂ (which is soluble in water), CO₂ (which is a gas), and H₂O (liquid), we need to classify the reaction.
- The presence of BaCO₃ as a solid indicates that it is dissolving in the presence of HCl, leading to the formation of soluble products.

### Conclusion
This reaction can be classified as a **precipitate dissolution reaction** because a solid precipitate (BaCO₃) is dissolving to form soluble products (BaCl₂) and releasing CO₂ gas.

### Summary
The reaction is a precipitate dissolution reaction.

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