A solution in which no more solute can be dissolved at the same temperature and pressure is called

Options

A. unsaturated solution
B. saturated solution
C. dissolution
D. crystallisation

Answer

To solve the question, we need to identify the type of solution described. Let's break it down step by step.

### Step-by-Step Solution:

1. **Understanding Solution Types**:
- Solutions can be classified into three categories: unsaturated, saturated, and supersaturated.

2. **Defining Unsaturated Solution**:
- An unsaturated solution is one where more solute can still be dissolved. If you keep adding solute, it will continue to dissolve until the solution reaches a certain limit.

3. **Defining Saturated Solution**:
- A saturated solution is one in which no more solute can be dissolved at a given temperature and pressure. This means that the solution has reached its maximum concentration of solute. If additional solute is added, it will not dissolve and will remain undissolved.

4. **Defining Supersaturated Solution**:
- A supersaturated solution contains more solute than what can be dissolved at a given temperature and pressure. This state is unstable, and any disturbance can cause the excess solute to precipitate out of the solution.

5. **Conclusion**:
- The solution described in the question is one where no more solute can be dissolved at the same temperature and pressure. This matches the definition of a **saturated solution**.

### Final Answer:
A solution in which no more solute can be dissolved at the same temperature and pressure is called a **saturated solution**.

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