How is `D_(2)O_(2)` prepared?

Explanation

To prepare D₂O₂ (deuterium peroxide), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**: The primary reactants for the preparation of D₂O₂ are potassium persulfate (K₂S₂O₈) and heavy water (D₂O).

2. **Set Up the Reaction**: The reaction involves the distillation of potassium persulfate with heavy water. The chemical reaction can be represented as:
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