The solubility ofmethanol in water is due to the fact that :

Options

A. Both have bent shape
B. Both have `sp^(3)` hybridised oxygen atoms
C. Both form H-bonds with one another
D. All the reasons are correct

Answer

To determine the reason for the solubility of methanol in water, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Chemical Structure of Methanol**:
- Methanol is chemically represented as CH₃OH. It consists of a methyl group (CH₃) attached to a hydroxyl group (OH).

2. **Understand the Structure of Water**:
- Water (H₂O) has a bent molecular shape due to the presence of two lone pairs of electrons on the oxygen atom, which leads to a V-shape.

3. **Hybridization of Atoms**:
- Both methanol and water contain oxygen atoms that are sp³ hybridized. In methanol, the carbon atom is also sp³ hybridized, leading to a tetrahedral arrangement around the carbon.

4. **Intermolecular Hydrogen Bonding**:
- The key factor for solubility is the ability of methanol to form hydrogen bonds with water. The hydroxyl (OH) group in methanol can interact with the hydrogen atoms of water molecules through hydrogen bonding.

5. **Formation of Hydrogen Bonds**:
- When methanol is mixed with water, the hydrogen atom of the hydroxyl group in methanol can form a hydrogen bond with the oxygen atom of a water molecule. This interaction creates a network of hydrogen bonds between methanol and water.

6. **Conclusion**:
- The solubility of methanol in water is primarily due to the formation of hydrogen bonds between methanol and water molecules, which stabilizes the mixture and allows methanol to dissolve in water effectively.

### Final Answer:
The solubility of methanol in water is due to the fact that both methanol and water can form hydrogen bonds with each other.

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