What happens to the vapor pressure, boiling point, and freezing point of a liquid when a solute is dissolved in the liquid to form a solution?
A)vapor pressure increases, boiling point decreases, and freezing point decreases
B)vapor pressure decreases, boiling point decreases, and freezing point decreases
C)vapor pressure decreases, boiling point increases, and freezing point decreases
D)vapor pressure increases, boiling point decreases, and freezing point increases
E)vapor pressure increases, boiling point increases, and freezing point increases

Question

Quizplus · Accepted Answer

When a solute is dissolved in a liquid to form a solution, the vapor pressure decreases due to the presence of additional particles in the solution that contribute to the overall pressure. The boiling point increases because the solutes impede the vapor pressure from overcoming atmospheric pressure, requiring more energy to reach the boiling point. The freezing point decreases because the solute disrupts the crystal lattice of the pure solvent, making it more difficult for the solvent to freeze.

What Happens to the Vapor Pressure, Boiling Point, and Freezing