Why lower amines are soluble in water?

Explanation

**Step-by-Step Solution:**

1. **Understanding Lower Amines**: Lower amines refer to amines that have a small number of carbon atoms in their alkyl groups. Examples include methylamine (1 carbon), ethylamine (2 carbons), and propylamine (3 carbons).

2. **Hydrogen Bond Formation**: Lower amines contain a nitrogen atom that has a lone pair of electrons. This nitrogen can form hydrogen bonds with water molecules. The hydrogen atoms of water (H2O) are partially positive due to the electronegativity of oxygen, while the lone pair on nitrogen is partially negative. This allows for an attractive interaction between the amine and water.

3. **Solubility in Water**: The ability of lower amines to form hydrogen bonds with water molecules increases their solubility. The more hydrogen bonds that can be formed, the more likely the amine will dissolve in water.

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