#### What is the relationship between the boiling point elevation and the molality of a solute in a solvent?Option: 1 Boiling point elevation is directly proportional to the molality of the solute in the solvent.  Option: 2 Boiling point elevation is inversely proportional to the molality of the solute in the solvent.  Option: 3 Boiling point elevation is independent of the molality of the solute in the solvent.  Option: 4 Boiling point elevation is directly proportional to the molar mass of the solute in the solvent.

Boiling point elevation is the difference between the boiling point of a pure solvent and a solution containing a non-volatile solute. It is directly proportional to the molality of the solute in the solvent, which is defined as the number of moles of solute per kilogram of solvent. This is because when a non-volatile solute is added to a solvent, it reduces the vapor pressure of the solution, and therefore, a higher temperature is required to reach the same vapor pressure as the pure solvent. The boiling point elevation can be calculated using the following formula:

$\delta T_b = K_b \times m$

Where $\delta T_b$ is the boiling point elevation, Kb is the molal boiling point elevation constant, and m is the molality of the solute in the solvent. Thus, the boiling point elevation is directly proportional to the molality of the solute in the solvent, and option A is the correct answer