The more the solute molecules the (A)_____ is the solute potential ` (Phi_(S))`

Answer

To solve the question, "The more the solute molecules the (A)_____ is the solute potential ` (Phi_(S))`," we need to understand the relationship between solute concentration and solute potential.

### Step-by-Step Solution:

1. **Understanding Solute Potential**:
- Solute potential (denoted as `Phi_(S)` or `Ψs`) refers to the effect of solute concentration on the overall water potential of a solution.

2. **Effect of Adding Solute**:
- When solute molecules are added to pure water, the water potential decreases. This is because the presence of solute molecules reduces the number of free water molecules available.

3. **Nature of Solute Potential**:
- Solute potential is always negative. Pure water has a water potential of zero, and adding solute lowers this potential, making it negative.

4. **Increasing Solute Concentration**:
- As the concentration of solute molecules increases, the magnitude of the solute potential becomes more negative. This means that with more solute, the solute potential decreases further.

5. **Filling in the Blank**:
- Therefore, the correct completion of the statement is: "The more the solute molecules, the **more negative** is the solute potential ` (Phi_(S))`."

### Final Answer:
The more the solute molecules, the **more negative** is the solute potential ` (Phi_(S))`.