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. **Understand the Concept of Heat of Solution**:
- The heat of solution refers to the amount of heat energy absorbed or released when a solute dissolves in a solvent. It is a thermodynamic property that can be influenced by various factors.

2. **Identify the Components**:
- In this scenario, we have a solute (the substance being dissolved) and a solvent (the substance doing the dissolving). The question focuses on the effect of adding more solvent to an existing solution.

3. **Consider the Effect of Adding Solvent**:
- When additional solvent is added to a solution, the concentration of the solute decreases. However, the heat of solution is primarily a characteristic of the solute-solvent interaction at a specific concentration.

4. **Determine the Dependency**:
- The heat of solution is dependent on the nature of the solute and the solvent, as well as the temperature and pressure conditions. However, it does not change simply because the amount of solvent is increased.

5. **Conclusion**:
- Therefore, the magnitude of the heat of solution remains constant upon the addition of more solvent. This is because the heat of solution is a property of the solute-solvent interaction and is not influenced by the volume of solvent added.

6. **Final Answer**:
- The correct answer is that the magnitude of heat of solution remains constant.