Phenol can be distinguished from ethanol by the following reagents except

Options

A. `Br_(2)//"water"`
B. Na
C. Neutral `FeCl_(3)`
D. All of these

Explanation

To solve the question of how phenol can be distinguished from ethanol, we need to analyze the reactions of each compound with the given reagents. The question specifically asks for the reagent that does NOT distinguish between phenol and ethanol.

### Step-by-Step Solution:

1. **Identify the Compounds**:
- We have two compounds: phenol (C6H5OH) and ethanol (C2H5OH).

2. **Reagent 1: Bromine Water**:
- **Reaction**: Phenol reacts with bromine water to form 2,4,6-tribromophenol, which precipitates as a white solid.
- **Ethanol Reaction**: Ethanol does not react with bromine water.
- **Conclusion**: This reagent can distinguish phenol from ethanol.

3. **Reagent 2: Sodium**:
- **Reaction**: Both phenol and ethanol react with sodium to produce hydrogen gas and their respective sodium alkoxides.
- **Conclusion**: This reagent cannot distinguish between phenol and ethanol since both react similarly.

4. **Reagent 3: Neutral FeCl3**:
- **Reaction**: Phenol reacts with neutral FeCl3 to form a violet or purple complex, indicating the presence of phenolic hydroxyl groups.
- **Ethanol Reaction**: Ethanol does not form a colored complex with FeCl3.
- **Conclusion**: This reagent can distinguish phenol from ethanol.

5. **Final Conclusion**:
- The question asks for the reagent that does NOT distinguish between phenol and ethanol. Since sodium is the only reagent that does not differentiate between the two, the answer is sodium.

### Answer:
The reagent that does NOT distinguish phenol from ethanol is sodium.

---