Question

Question 2

Adding more solute to a solvent ____.

A)decreases its boiling point

B)does not affect its boiling point

C)increases its boiling point

D)increases its freezing point

Answer 1

C) Increases its boiling point

Step-by-step explanation:

Adding more solute to a solvent increases its boiling point! This is a phenomenon described by the colligative properties. When we add a solvent to a solute, the boiling point increases.

Put in vapor pressure terms, a liquid boils at the temperature when its vapor pressure equals the surrounding pressure. For the solvent, the presence of the solute decreases its vapor pressure by dilution. Thus, a higher temperature is needed for the vapor pressure to reach the surrounding pressure, and the boiling point is elevated.