When a solution containing non- volatile solute freezes, which equilibrium would exist?

Options

A. solid solvent`hArr` liquid sovent
B. solid solute` hArr` liquid solution
C. solid solute `hArr`liquit sovent
D. solid solvent `hArr`liquid solution

Answer

To solve the question regarding the equilibrium that exists when a solution containing a non-volatile solute freezes, we can break down the process step by step.

### Step-by-Step Solution:

1. **Understanding the Components**:
- A solution consists of a solvent (usually a liquid) and a solute (the substance dissolved in the solvent). In this case, the solute is non-volatile, meaning it does not evaporate easily and remains in the solution when the solvent freezes.

2. **Freezing Process**:
- When the solution freezes, the solvent (liquid) transitions to a solid state (ice), while the non-volatile solute remains in the solution. The solute particles do not freeze and instead get trapped within the solidified solvent.

3. **Formation of Solid Solvent**:
- As the solvent freezes, it forms a solid structure (ice) that contains the non-volatile solute particles. This results in a solid solvent that is in contact with the remaining liquid solution.

4. **Equilibrium Establishment**:
- At this point, we have two phases: the solid phase (solid solvent) and the liquid phase (remaining liquid solution). These two phases can exist together, and there is a dynamic equilibrium between them. The solid solvent can melt back into the liquid solution, and the liquid can freeze to become solid again.

5. **Conclusion**:
- Therefore, the equilibrium that exists during the freezing of a solution containing a non-volatile solute is between the liquid solution and the solid solvent. This can be represented as:
- **Liquid Solution ⇌ Solid Solvent**

### Final Answer:
The equilibrium that exists when a solution containing a non-volatile solute freezes is between the liquid solution and the solid solvent.