Which of the following is an example of redox reaction ?

Options

A. `XeF_(6)+H_(2)OrarrXeO_(2)F_(2)+4Hf`
B. `XeF_(6)+2H_(2)OrarrXeO_(2)F_(2)+4Hf`
C. `XeF_(4)+O_(2)F_(2)rarrXeF_(6)+O_(2)`
D. `XeF_(2)+PF_(5)rarr[XeF]^(+)PF_(6)^(-)`

Explanation

To determine which of the following reactions is an example of a redox reaction, we first need to understand what a redox reaction is. A redox (reduction-oxidation) reaction involves the transfer of electrons between two species, resulting in a change in oxidation states. In these reactions, one substance is oxidized (loses electrons) and another is reduced (gains electrons).

### Step-by-Step Solution:

1. **Identify the Reactions**:
We need to look at the given options (which were not provided in the question) and identify the chemical reactions.

2. **Determine Oxidation States**:
For each reaction, assign oxidation states to all the elements involved. This will help us identify which elements are oxidized and which are reduced.

3. **Look for Changes in Oxidation States**:
Compare the oxidation states of the reactants and products. If you find that one element's oxidation state has increased (indicating oxidation) and another's has decreased (indicating reduction), then that reaction is a redox reaction.

4. **Conclusion**:
After analyzing the oxidation states of the elements in each reaction, conclude which reaction shows both oxidation and reduction processes. This will be the redox reaction.

### Example (Hypothetical Reactions):
- **Reaction A**: \( \text{Zn} + \text{Cu}^{2+} \rightarrow \text{Zn}^{2+} + \text{Cu} \)
- **Reaction B**: \( \text{H}_2 + \text{Cl}_2 \rightarrow 2\text{HCl} \)
- **Reaction C**: \( \text{C} + \text{O}_2 \rightarrow \text{CO}_2 \)

**Analyzing the Reactions**:
- **Reaction A**:
- Zn goes from 0 to +2 (oxidized).
- Cu goes from +2 to 0 (reduced).
- This is a redox reaction.

- **Reaction B**:
- H goes from 0 to +1 (oxidized).
- Cl goes from 0 to -1 (reduced).
- This is also a redox reaction.

- **Reaction C**:
- C goes from 0 to +4 (oxidized).
- O goes from 0 to -2 (reduced).
- This is a redox reaction as well.

### Final Answer:
All three reactions (A, B, and C) are examples of redox reactions.

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