Write a balanced chemical equation of the following reactions and also classify them.
A piece of sodium metal is added to absolute ethanol to form sodium ethoxide and hydrogen gas.

Explanation

To write a balanced chemical equation for the reaction of sodium metal with absolute ethanol, and to classify the reaction, we can follow these steps:

### Step 1: Identify the reactants and products
- **Reactants**: Sodium metal (Na) and absolute ethanol (C₂H₅OH)
- **Products**: Sodium ethoxide (C₂H₅ONa) and hydrogen gas (H₂)

### Step 2: Write the unbalanced chemical equation
The unbalanced equation can be written as:
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