Explain why :
o-nitrophenol possesses low boiling point in spite of the presence of hydrogen bonding in it.

Explanation

### Step-by-Step Solution:

1. **Understanding Ortho-Nitrophenol Structure**:
- Ortho-nitrophenol is a derivative of phenol where a nitro group (-NO2) is attached to the ortho position (adjacent) of the hydroxyl group (-OH).
- The molecular formula is C6H5(NO2)(OH).

2. **Presence of Hydrogen Bonding**:
- In ortho-nitrophenol, hydrogen bonding occurs between the hydrogen atom of the hydroxyl group and the nitrogen atom of the nitro group.
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