Give the decreasing orderof solubility of the following in`H_(2)O`:
(I)`PhNH_(2),(II)Et_(2)NH,(III)EtNH_(2)`

Explanation

To determine the decreasing order of solubility of the compounds in water, we need to analyze the nature of each compound based on their structure and the presence of hydrophilic (water-attracting) or hydrophobic (water-repelling) groups.

### Step-by-Step Solution:

1. **Identify the Compounds**:
- (I) PhNH₂ (Aniline or Phenylamine)
- (II) Et₂NH (Diethylamine)
- (III) EtNH₂ (Ethylamine)
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