Which has ability to release bromine from KBr ?

Options

A. `l_(2)`
B. `Br_(2)`
C. `Cl_(2)`
D. `SO_(2)`

Answer

To determine which substance has the ability to release bromine from KBr, we need to analyze the given options: I2, Br2, Cl2, and SO2.

### Step-by-Step Solution:

1. **Understanding the Reaction**:
- KBr is a salt composed of potassium (K) and bromine (Br). To release bromine from KBr, we need a substance that can oxidize bromide ions (Br⁻) to bromine (Br₂).

2. **Identifying Oxidizing Agents**:
- An oxidizing agent is a substance that can accept electrons from another species. In this case, we need a stronger oxidizing agent than bromine itself to release bromine from KBr.

3. **Analyzing the Options**:
- **I2 (Iodine)**: Iodine is a weaker oxidizing agent than bromine. It cannot oxidize bromide ions to bromine.
- **Br2 (Bromine)**: Bromine cannot oxidize bromide ions to bromine because it is the same species. Therefore, it cannot release bromine from KBr.
- **Cl2 (Chlorine)**: Chlorine is a stronger oxidizing agent than bromine. It can oxidize bromide ions to bromine, thus releasing bromine from KBr.
- **SO2 (Sulfur Dioxide)**: While SO2 can act as an oxidizing agent, it is not typically used to release bromine from KBr.

4. **Conclusion**:
- The only substance among the options that can release bromine from KBr is **Cl2 (Chlorine)**.

### Final Answer:
**Cl2 (Chlorine)** has the ability to release bromine from KBr.

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