Arrange the following aqueous solutions in order of increasing boiling points: 0.300m C₆H₁₂O₆, 0.110m K₂CO₃, and 0.050m Al(ClO₄)₃. A) C₆H₁₂O₆

Question

Arrange the following aqueous solutions in order of increasing boiling points: 0.300m C₆H₁₂O₆, 0.110m K₂CO₃, and 0.050m Al(ClO₄)₃. A) C₆H₁₂O₆ < K₂CO₃ < Al(ClO₄)₃ B) Al(ClO₄)₃ < C₆H₁₂O₆ < K₂CO₃ C) C₆H₁₂O₆ < Al(ClO₄)₃ < K₂CO₃ D) K₂CO₃ < C₆H₁₂O₆ < Al(ClO₄)₃ E) K₂CO₃ < Al(ClO₄)₃ < C₆H₁₂O₆

Quizplus · Accepted Answer

The boiling point of a solution is directly related to the concentration of solute particles in the solution. The more concentrated the solution, the higher the boiling point.

Out of the three given solutions, Al(ClO₄)₃ has the highest concentration of solute particles as it dissociates into three ions (Al³⁺, ClO₄⁻) when added to water. Thus, it has the highest boiling point.

Next, CS₂ has a lower concentration of solute particles than Al(ClO₄)₃ as it only dissociates into two molecules in solution. Lastly, KClO₃ has the lowest concentration of solute particles as it only dissociates into one K⁺ ion and one ClO₃⁻ ion in solution. Therefore, it has the lowest boiling point.

Therefore, the correct order from lowest boiling point to highest boiling point is KClO₃, CS₂, and Al(ClO₄)₃, so option B is the correct answer.

Arrange the Following Aqueous Solutions in Order of Increasing Boiling