In lead chamber process , which one of the following oxides is used as a catalysts ?

Options

A. NO
B. `NO_(2)`
C. `N_(2)O_(3)`
D. `N_(2)O_(5)`

Answer

**Step-by-Step Solution:**

1. **Understanding the Lead Chamber Process**: The lead chamber process is primarily used for the production of sulfuric acid (H₂SO₄). It involves the oxidation of sulfur dioxide (SO₂) to sulfur trioxide (SO₃).

2. **Identifying the Reaction**: The key reactions in the lead chamber process can be summarized as follows:
- The first reaction involves the oxidation of sulfur dioxide:
\[ 2 \text{SO}_2(g) + \text{O}_2(g) \rightarrow 2 \text{SO}_3(g) \]
- The second reaction involves the interaction of sulfur dioxide with nitrogen dioxide (NO₂):
\[ \text{SO}_2(g) + \text{NO}_2(g) \rightarrow \text{SO}_3(g) + \text{NO}(g) \]

3. **Role of the Catalyst**: In the lead chamber process, nitrogen dioxide (NO₂) acts as an intermediate and also facilitates the conversion of sulfur dioxide to sulfur trioxide. The product nitrogen monoxide (NO) can also participate in the reaction, indicating that it acts as a catalyst.

4. **Conclusion**: From the above reactions, we can conclude that the oxide used as a catalyst in the lead chamber process is nitrogen monoxide (NO).

5. **Final Answer**: Therefore, the correct answer to the question is that nitric oxide (NO) is used as a catalyst in the lead chamber process.

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