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Explain the following giving suitable re...

Explain the following giving suitable reasons: In the manufacture of `H_2SO_4` by contact process:
For the production of concentrated sulphuric acid, `SO_3` is not directly dissolved in water. 

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### Step-by-Step Solution: 1. **Introduction to the Contact Process**: The contact process is the primary method for manufacturing sulfuric acid (H₂SO₄). It involves the oxidation of sulfur dioxide (SO₂) to sulfur trioxide (SO₃), which is then converted into sulfuric acid. 2. **Reason 1: Exothermic Reaction**: When sulfur trioxide (SO₃) is added directly to water, it undergoes a highly exothermic reaction. This means that the reaction releases a significant amount of heat. The reaction can be represented as: \[ ...
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