The vapor pressure of water at 45.0 ^$\circ$C is 71.93 mmHg. Calculate the vapor pressure of a solution of 1.25m Al(ClO₃)₃ at this temperature (assume 100% dissociation).

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Quizplus · Accepted Answer

The vapor pressure of the solution is lower than that of pure water due to the presence of solute particles. Al(ClO3)3 dissociates into 4 ions, so the molality of particles is 1.25m x 4 = 5.0m. Using Raoult's Law, the vapor pressure is reduced proportionally to the mole fraction of the solvent, resulting in a vapor pressure of approximately 66.0 mmHg.

The Vapor Pressure of Water at 45 ∘\circ∘ C Is 71

The Vapor Pressure of Water at 45 $\circ$ C Is 71