Phenol can be distinguished from ethanol by the following reagents except

Options

A. sodium
B. `NAOH//I_(2)`
C. netrual `FeCl_(3)`
D. `Br_(2)//H_(2)O`

Explanation

To solve the question of distinguishing phenol from ethanol using various reagents, we will analyze the reactions of both compounds with different reagents and identify which reagent does not provide a distinguishing result.

### Step-by-Step Solution:

1. **Identify the Structures**:
- Phenol: C6H5OH
- Ethanol: C2H5OH

2. **Reagent 1: Sodium (Na)**:
- Both phenol and ethanol react with sodium to produce hydrogen gas and their respective alkoxides (sodium phenoxide and sodium ethoxide).
- **Conclusion**: Sodium cannot distinguish between phenol and ethanol.

3. **Reagent 2: Iodine in the presence of Sodium Hydroxide (NaOH)**:
- This is known as the Iodoform reaction.
- Ethanol reacts with NaOH and I2 to form iodoform (CHI3), while phenol does not undergo this reaction.
- **Conclusion**: This reagent can distinguish between phenol and ethanol.

4. **Reagent 3: Neutral Iron(III) Chloride (FeCl3)**:
- Phenol reacts with FeCl3 to form a violet-colored complex (phenyl phenoxide), while ethanol does not react.
- **Conclusion**: This reagent can distinguish between phenol and ethanol.

5. **Reagent 4: Bromine Water**:
- Phenol reacts with bromine water to form a brominated product (bromophenol), while ethanol does not react and remains unchanged.
- **Conclusion**: This reagent can distinguish between phenol and ethanol.

6. **Final Analysis**:
- The only reagent that does not differentiate between phenol and ethanol is sodium (Na). Therefore, the answer to the question is sodium.

### Final Answer:
Phenol can be distinguished from ethanol by the following reagents except sodium (Na).

---