Explain in detail how sulphuric acid is prepared by the Contact process

Explanation

### Step-by-Step Solution: Preparation of Sulfuric Acid by the Contact Process

**Step 1: Catalytic Oxidation of Sulfur Dioxide (SO2)**
The first step in the Contact Process involves the catalytic oxidation of sulfur dioxide (SO2) to sulfur trioxide (SO3). The chemical reaction can be represented as follows:

\[ \text{2 SO}_2 + \text{O}_2 \rightarrow \text{2 SO}_3 \]

- **Conditions**:
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