The soda and acid present in a soda-acid fire extinguisher combine to form _____ along with carbon dioxide and water.

Options

A. Sodium sulphate
B. Sodium bisulphate
C. Sodium carbonate
D. Sodium bicarbonate

Answer

To solve the question regarding the products formed when the soda and acid in a soda-acid fire extinguisher combine, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Components**:
- The soda in a soda-acid fire extinguisher is sodium bicarbonate (NaHCO₃).
- The acid typically used is sulfuric acid (H₂SO₄).

2. **Write the Reaction**:
- When sodium bicarbonate reacts with sulfuric acid, the reaction can be written as:
\[ \text{NaHCO}_3 + \text{H}_2\text{SO}_4 \rightarrow \text{Na}_2\text{SO}_4 + \text{CO}_2 + \text{H}_2\text{O} \]

3. **Identify the Products**:
- From the reaction, we can see that the products formed are:
- Sodium sulfate (Na₂SO₄)
- Carbon dioxide (CO₂)
- Water (H₂O)

4. **Answer the Question**:
- The question asks what is formed along with carbon dioxide and water. The answer is sodium sulfate (Na₂SO₄).

5. **Select the Correct Option**:
- If provided with options, the correct answer would be the one that lists sodium sulfate.

### Final Answer:
The soda and acid present in a soda-acid fire extinguisher combine to form **sodium sulfate (Na₂SO₄)** along with carbon dioxide and water.

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