`H_(2)S` acts only as reducing agent while `SO_(2)` can act both as a reducing agent and as an oxidising agent. How will you account for it ?

Explanation

To understand why \( H_2S \) acts only as a reducing agent while \( SO_2 \) can act both as a reducing agent and as an oxidizing agent, we need to analyze the oxidation states of sulfur in both compounds and their respective chemical behaviors.

### Step-by-Step Solution:

1. **Identify the Oxidation States**:
- In \( H_2S \) (hydrogen sulfide), sulfur has an oxidation state of -2.
- In \( SO_2 \) (sulfur dioxide), sulfur has an oxidation state of +4.

...