How do you account for the fact that unlike phenol, 2,4-dinitrophenol and 2, 4, 6-trinitrophenol are soluble in aqueous sodium carbonate solution ?

Explanation

To understand why 2,4-dinitrophenol and 2,4,6-trinitrophenol are soluble in aqueous sodium carbonate solution, while phenol is not, we can analyze the acidity of these compounds and their ability to react with sodium carbonate.

### Step-by-Step Solution:

1. **Understanding the Compounds**:
- **Phenol** (C6H5OH) is a weak acid. It can donate a proton (H+) to form phenoxide ion (C6H5O−), but its acidity is relatively low.
- **2,4-Dinitrophenol** (C6H3(NO2)2OH) and **2,4,6-Trinitrophenol** (C6H2(NO2)3OH) have multiple nitro (NO2) groups attached to the benzene ring, which significantly increases their acidity.

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