When sodium bicarbonate is heated strongly for calcined in a kiln, it forms,

Options

A. Na
B. `Na_(2)CO_(3)`
C. `NaCO_(3)`
D. `NaHCO_(3)`

Answer

To solve the question regarding the thermal decomposition of sodium bicarbonate (NaHCO₃) when heated strongly, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Compound**:
Sodium bicarbonate is represented by the chemical formula NaHCO₃.

2. **Understand the Process**:
The question states that sodium bicarbonate is heated strongly. This process is known as thermal decomposition.

3. **Write the Decomposition Reaction**:
When sodium bicarbonate is heated, it decomposes into sodium carbonate (Na₂CO₃), water (H₂O), and carbon dioxide (CO₂). The balanced chemical equation for this reaction is:
\[ 2 \text{NaHCO}_3 \rightarrow \text{Na}_2\text{CO}_3 + \text{H}_2\text{O} + \text{CO}_2 \]

4. **Identify the Products**:
From the decomposition reaction, we can see that the products formed are:
- Sodium carbonate (Na₂CO₃)
- Water (H₂O)
- Carbon dioxide (CO₂)

5. **Conclusion**:
Therefore, when sodium bicarbonate is heated strongly, it forms sodium carbonate, water, and carbon dioxide.

### Final Answer:
When sodium bicarbonate (NaHCO₃) is heated strongly, it forms sodium carbonate (Na₂CO₃), water (H₂O), and carbon dioxide (CO₂).

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