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 solve the question regarding the solubility of methanol in water, we can break it down into several steps:

### Step 1: Understanding the Structure of Methanol
Methanol (CH₃OH) is a simple alcohol with one hydroxyl (-OH) group. This hydroxyl group is responsible for its polar nature.

**Hint:** Recall that polar molecules tend to dissolve well in polar solvents.

### Step 2: Analyzing Water's Structure
Water (H₂O) is also a polar molecule, with a bent shape due to the two hydrogen atoms bonded to the oxygen atom. The oxygen atom is more electronegative than hydrogen, creating a dipole moment.

**Hint:** Remember that the polarity of a molecule affects its ability to interact with other polar molecules.

### Step 3: Hydrogen Bond Formation
Both methanol and water can form hydrogen bonds because they contain hydrogen atoms bonded to electronegative atoms (oxygen in this case). The hydrogen atom of the hydroxyl group in methanol can form a hydrogen bond with the oxygen atom in water.

**Hint:** Think about how hydrogen bonds are formed and the conditions necessary for their formation.

### Step 4: Solubility of Methanol in Water
The ability of methanol to form hydrogen bonds with water molecules is the primary reason for its high solubility in water. The interaction between methanol and water molecules stabilizes the solution, allowing methanol to dissolve effectively.

**Hint:** Consider how intermolecular forces influence solubility.

### Step 5: Evaluating the Options
Given the options in the question:
1. Both have bent shape.
2. Both have sp³ hybridized oxygen atoms.
3. Both form hydrogen bonds with one another.

The correct answer is option 3, as it directly addresses the reason for the solubility of methanol in water.

**Hint:** Focus on the specific interactions that lead to solubility rather than general structural similarities.

### Final Answer
The solubility of methanol in water is due to the fact that both form hydrogen bonds with one another.

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