Question

How does adding a non-volatile solute to a pure solvent affect the boiling point of the pure solvent?

Answer 1

Colligative properties depend on the amount of solute dissolved in a solvent. These set of properties do not depend on the type of species present. These properties include freezing point depression, boiling point elevation, osmotic pressure and vapor pressure lowering. The correct answer is the second option. The solvent will have a higher boiling point.

Answer 2

Answer:

The correct answer is The solvent will have a higher boiling point

Explanation:

This question will be better understood with the knowledge of colligative property. The colligative properties of a solution are properties that are determined by the concentration of solute in the solution and not the identity of the solute. There are four colligative properties and one of them has been presented in the question.

Consider this common example, when a non-volatile solute like salt is added to a pure solvent like water, the boiling point of the solvent (which is water) becomes increased hence the colligative property here is that, the solute causes the elevation/increase in the boiling point of the solvent. This is the reason why pure water will boil earlier than an aqueous salt solution (like ocean water).

Thus, from the question, it can be said that when the non-volatile solute is added to the solvent, the solvent will have a higher boiling point.