What happens when : (i) Ethanol is mixed with conc. `H_(2)SO_(4)` at 273K.

Explanation

To understand what happens when ethanol is mixed with concentrated sulfuric acid (H₂SO₄) at 273 K, we can break down the process step by step:

### Step-by-Step Solution:

1. **Identify the Reactants:**
- Ethanol (C₂H₅OH) is the alcohol we are working with.
- Concentrated sulfuric acid (H₂SO₄) is a strong dehydrating agent.

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