Question

Vapor pressure lowering occurs at all temperatures, which results in the temperature required to freeze the solution being _______ than the freezing point of the pure solvent.

a) Lower
b) Higher

Answer 1

Vapor pressure lowering causes the freezing point of a solution to be lower than the freezing point of the pure solvent.

Step-by-step explanation:

Vapor pressure lowering occurs at all temperatures, which results in the temperature required to freeze the solution being lower than the freezing point of the pure solvent.

When a solute is dissolved in a solvent, it interferes with the process of the solvent particles coming together to form a solid phase, requiring more energy to be removed from the solution to freeze it. This leads to a lower freezing point compared to the pure solvent.