Which of the following compounds contain an aryl carbon ?

Options

A. Ethanol
B. Benzyl alcohol
C. Vinyl alcohol
D. Phenol

Answer

To determine which of the given compounds contains an aryl carbon, we first need to understand what an aryl carbon is.

### Step-by-Step Solution:

1. **Define Aryl Carbon**:
An aryl carbon is a carbon atom that is part of an aromatic ring, such as benzene. It typically has a hydrogen atom that can be replaced by another group, making it an aryl carbon.

2. **Analyze Each Compound**:
- **Ethanol (C2H5OH)**:
- Structure: CH3-CH2-OH
- Analysis: Ethanol does not contain an aromatic ring; hence, it does not have an aryl carbon.

- **Benzyl Alcohol (C6H5CH2OH)**:
- Structure: C6H5-CH2-OH
- Analysis: Benzyl alcohol has a benzene ring, but the carbon attached to the hydroxyl (OH) group is a CH2 group, which is not an aryl carbon. Therefore, it does not contain an aryl carbon.

- **Vinyl Alcohol (C2H4O)**:
- Structure: CH2=CH-OH
- Analysis: Vinyl alcohol does not contain an aromatic ring; it has a double bond between carbons and is classified as an alkene. Thus, it does not contain an aryl carbon.

- **Phenol (C6H5OH)**:
- Structure: C6H5-OH
- Analysis: Phenol has a hydroxyl group attached directly to a carbon of the benzene ring. The carbon in the benzene ring that is bonded to the hydroxyl group is indeed an aryl carbon.

3. **Conclusion**:
Among the given compounds, only **phenol** contains an aryl carbon.

### Final Answer:
The compound that contains an aryl carbon is **phenol**.

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