Correct the following statements by changing the underlined part of the sentence. (Do not change the whole sentence):
The relative lowering of vapour pressure of a solvent by a solute is `ul("proportional to the molality of the solution.")`

Explanation

To correct the statement, we need to replace the underlined part with the correct relationship regarding the relative lowering of vapor pressure of a solvent by a solute. Here’s the step-by-step text solution:

### Step-by-Step Solution:

1. **Understanding the Statement**: The original statement is: "The relative lowering of vapour pressure of a solvent by a solute is proportional to the molality of the solution."

2. **Identifying the Error**: The underlined part states that the relative lowering of vapor pressure is "proportional to the molality of the solution." This is incorrect. The relative lowering of vapor pressure is not directly proportional to molality.

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