Which of the solutions shown here will have the highest vapor pressure? White circles indicate solvent molecules; black circles indicate molecules of a nonvolatile solute.

Question

Quizplus · Accepted Answer

The solution with the highest vapor pressure will have the most solvent molecules at the surface, as those are the ones most likely to evaporate. In solution A, there are only solvent molecules present at the surface, while solutions B, C, and D also have nonvolatile solute molecules present. Therefore, solution A will have the highest vapor pressure.

Which of the Solutions Shown Here Will Have the Highest