Out of o-nitrophenol and p-nitrophenol, which is more volatile ? Explain?

Explanation

To determine which compound is more volatile between o-nitrophenol and p-nitrophenol, we need to analyze their structures and the types of hydrogen bonding they exhibit.

### Step-by-Step Solution:

1. **Identify the Structures**:
- **o-Nitrophenol**: The nitro group (-NO2) is positioned ortho (adjacent) to the hydroxyl group (-OH).
- **p-Nitrophenol**: The nitro group is positioned para (opposite) to the hydroxyl group.

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