`BaCO_(3)darr+CO_(2)+H_(2)O to Ba(HCO_(3))_(2)`

Options

A. For coloured ppt./Black ppt
B. For coloured solution.
C. for clear/colourless solution
D. For white ppt.

Answer

To solve the question regarding the reaction of barium carbonate (BaCO₃) with carbon dioxide (CO₂) and water (H₂O) to form barium hydrogen carbonate (Ba(HCO₃)₂), we will analyze the reaction step by step.

### Step-by-Step Solution:

1. **Identify the Reactants and Products:**
- The reactants are barium carbonate (BaCO₃), carbon dioxide (CO₂), and water (H₂O).
- The product formed is barium hydrogen carbonate, represented as Ba(HCO₃)₂.

2. **Write the Balanced Chemical Equation:**
- The balanced equation for the reaction is:
\[ \text{BaCO}_3 + \text{CO}_2 + \text{H}_2\text{O} \rightarrow \text{Ba(HCO}_3\text{)}_2 \]

3. **Determine the Solubility of the Products:**
- Barium hydrogen carbonate (Ba(HCO₃)₂) is a hydrogen carbonate, and it is known that all hydrogen carbonates are soluble in water.

4. **Analyze the Physical State of the Products:**
- Since Ba(HCO₃)₂ is soluble in water, it will not form a precipitate. Instead, it will result in a clear and colorless solution.

5. **Conclusion:**
- Based on the analysis, the reaction will yield a clear and colorless solution, eliminating the possibilities of a colored solution, black precipitate, or white precipitate.

### Final Answer:
The reaction will form a clear and colorless solution.