Question

Identify the correct statement about the following reaction:
2H2S + SO2 → 2H2O + S

• A. H2S is oxidising agent and SO2 is reducing agent.
• B. H2S is reduced to sulphur.
• C. SO2 is oxidising agent and H2S is reducing agent.
• D. SO2 is oxidised to sulphur.

Answer 1

Answer: (C)

SO2 is oxidising agent and H2S is reducing agent.

Answer 2

In this reaction:
- H$_2$S is oxidized to sulphur, indicating that H$_2$S acts as a reducing agent.
- SO$_2$ is reduced to water, indicating that SO$_2$ acts as an oxidizing agent.
This makes SO$_2$ the oxidizing agent and H$_2$S the reducing agent.