What is the vapor pressure of an aqueous solution that has a solute mol fraction of $\chi$ = 0.100 ? The vapor pressure of water is 25.756 mm Hg at 25 $\circ$ C.
A)23.2 mm Hg
B)2.58 mm Hg
C)25.8 mm Hg
D)0.900 mm Hg
E)22.3 mm Hg

Question

Quizplus · Accepted Answer

The vapor pressure of the solution can be calculated using Raoult's Law, which states that the vapor pressure of a solution is equal to the mole fraction of the solvent times the vapor pressure of the pure solvent. Given that the mole fraction of the solute is 0.100, the mole fraction of the solvent (water) is 1 - 0.100 = 0.900. Therefore, the vapor pressure of the solution is 0.900 * 25.756 mm Hg = 23.1804 mm Hg, which rounds to 23.2 mm Hg.

What Is the Vapor Pressure of an Aqueous Solution That χ\chiχ

What Is the Vapor Pressure of an Aqueous Solution That $\chi$