Identify the substances undergoing oxidation and reduction in the following reactions.
`SO_(2)+2H_(2)Sto2H_(2)+3S`

Explanation

To identify the substances undergoing oxidation and reduction in the reaction \( SO_2 + 2H_2S \rightarrow 2H_2 + 3S \), we can follow these steps:

### Step 1: Write the reaction clearly
The given reaction is:
\[ SO_2 + 2H_2S \rightarrow 2H_2 + 3S \]

### Step 2: Identify oxidation and reduction definitions
- **Oxidation** is defined as the addition of oxygen, removal of hydrogen, or loss of electrons.
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