A solution contains 1.0 g of solute dissolved in 100 mL of water. Which of the following solutes will cause the solution to have the lowest freezing point? A) Ribose, C₅H₁₀O₅, will cause the solution to have the lowest freezing point. B) Glucose, C₆H₁₂O₆, will cause the solution to have the lowest freezing point. C) Sucrose, C₁₂H₂₂O₁₁, will cause the solution to have the lowest freezing point. D) All of these will cause the solution to have the same freezing point.

Question

Quizplus · Accepted Answer

The freezing point depression depends on the number of particles in solution. Ribose has the smallest molar mass, resulting in the highest number of moles (and thus particles) for the same mass, causing the greatest freezing point depression.

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