Name two compounds which retard the decomposition of `H_(2)O_(2)`.

Explanation

To solve the question of naming two compounds that retard the decomposition of hydrogen peroxide (H₂O₂), we can follow these steps:

### Step 1: Understand the Decomposition of H₂O₂
Hydrogen peroxide decomposes into water (H₂O) and oxygen gas (O₂). The balanced chemical equation for this decomposition is:
\[ 2 \, \text{H}_2\text{O}_2 \rightarrow 2 \, \text{H}_2\text{O} + \text{O}_2 \]

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