Final answer:
When a solute is added to a solvent, the colligative properties of the solvent, such as freezing point, boiling point, and vapor pressure, are affected. The vapor pressure is decreased, the boiling point is increased, and the freezing point is decreased.
Step-by-step explanation:
The colligative properties of a solution, such as freezing point, boiling point, and vapor pressure, change when a solute is added. When a nonvolatile solute is added to a solvent, it decreases the vapor pressure of the solvent. The boiling point of the solvent increases, and the freezing point of the solvent decreases.