Drawing (1)shows the equilibrium vapor pressure of a pure liquid.Which drawing (2)-(5)represents the equilibrium vapor pressure when a nonvolatile solute is dissolved in the liquid?

Question

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When a nonvolatile solute is dissolved in a liquid, the vapor pressure of the resulting solution is lower than the vapor pressure of the pure solvent. This is represented by a lower line on the vapor pressure graph. Drawings 3, 4, and 5 all show a lower vapor pressure than the pure solvent, but drawing 2 shows the closest match to the expected decrease in vapor pressure.

Drawing (1)shows the Equilibrium Vapor Pressure of a Pure Liquid