The magnitude of heat of solution ….. On addition of solvent to solution

Options

A. Decreases
B. Increases
C. Remains constant
D. Increases or decreases

Answer

To solve the question regarding the magnitude of heat of solution upon the addition of solvent to a solution, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Heat of Solution**: The heat of solution refers to the amount of heat absorbed or released when a solute dissolves in a solvent. This process can either be exothermic (releasing heat) or endothermic (absorbing heat).

2. **Effect of Adding Solvent**: When additional solvent is added to a solution, the concentration of the solute decreases. However, the heat of solution is a property that is specific to the solute-solvent interaction and the reaction that occurs when the solute dissolves.

3. **Constant Value of Heat of Solution**: The heat of solution is determined by the nature of the solute and solvent, as well as the specific interactions between them. Therefore, when more solvent is added, the overall process of dissolution does not change the intrinsic heat of solution for the solute.

4. **Conclusion**: Since the heat of solution is dependent on the specific reaction and not on the concentration of the solute, the magnitude of heat of solution remains constant even when additional solvent is added.

5. **Final Answer**: The magnitude of heat of solution remains constant upon the addition of solvent to the solution.