The osmotic pressure of pure water is:

Options

A. 0
B. 0.1
C. 1
D. 10

Answer

To determine the osmotic pressure of pure water, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Osmotic Pressure**:
- Osmotic pressure is defined as the minimum pressure that needs to be applied to a solution to prevent the inward flow of its solvent across a semi-permeable membrane.

2. **Identify the Nature of Pure Water**:
- Pure water is a solvent that does not contain any solutes.

3. **Relate Osmotic Pressure to Solutes**:
- Osmotic pressure is generated when solutes are present in a solution. The presence of solutes creates a concentration gradient, which leads to the movement of water into the solution.

4. **Evaluate Pure Water**:
- Since pure water has no solutes, there is no concentration gradient to create osmotic pressure.

5. **Conclude the Osmotic Pressure of Pure Water**:
- Therefore, the osmotic pressure of pure water is 0, as there are no solutes to generate any pressure.

### Final Answer:
The osmotic pressure of pure water is **0**.

---