Fenton's reagent is

Options

A. `FeSO_(4)+H_(2)O_(2)`
B. Zn+HCl
C. Sn+HCl
D. None of these

Answer

### Step-by-Step Solution:

1. **Definition of Fenton's Reagent**:
Fenton's reagent is a chemical solution used primarily for oxidation reactions. It is composed of hydrogen peroxide (H₂O₂) and iron(II) ions (Fe²⁺).

2. **Composition**:
The typical formulation of Fenton's reagent includes:
- **Hydrogen Peroxide (H₂O₂)**: A strong oxidizing agent.
- **Iron(II) Sulfate (FeSO₄)**: Provides the Fe²⁺ ions necessary for the reaction.

3. **Chemical Reaction**:
When Fenton's reagent is used, the iron(II) ions catalyze the decomposition of hydrogen peroxide, producing hydroxyl radicals (•OH), which are highly reactive and can oxidize a variety of organic compounds.

The general reaction can be represented as:
\[ \text{Fe}^{2+} + \text{H}_2\text{O}_2 \rightarrow \text{Fe}^{3+} + \cdot \text{OH} + \text{OH}^- \]

4. **Applications**:
Fenton's reagent is widely used in environmental chemistry, particularly for:
- **Wastewater Treatment**: It helps in the oxidation of organic pollutants, making them less harmful.
- **Destruction of Organic Compounds**: It is effective in breaking down complex organic molecules into simpler, less toxic substances.

5. **Conclusion**:
Fenton's reagent is an important tool in both industrial and environmental chemistry for its ability to oxidize and break down organic pollutants efficiently.