Question

Equimolar solutions in the same solvent have

• A. Same freezing point but the different boiling point
• B. Same boiling point but different freezing point
• C. Different boiling and different freezing point
• D. Same boiling and same freezing points

Answer 1

The correct option is D

Same boiling and same freezing points

Explanation:

• Colligative Properties: Colligative properties are the properties that depend on the concentration of molecules or ions of the solute, but not on the identity of the solute.
• Colligative properties include lowering of vapor pressure, boiling point elevation, depression of the freezing point, and osmotic pressure.
• Equimolar solutions: Equimolar solutions are the solution that contains the same number of moles of solute dissolved in a solvent.
• So, in an equimolar solution, both the solvents are having the same amount or number of moles, therefore, all the colligative properties also remain the same.
• In the given options, boiling and freezing point are there and these both are colligative properties.
• Thus, the equimolar solution will have the same boiling point and also the same freezing point.

Hence, option (D) is the correct answer. Equimolar solutions in the same solvent have the same boiling and same freezing points.