A solution of methanol in water at 25 °C lowers the vapor pressure of the water by 0.26 torr. The vapor pressure of pure water at 25 °C is 23.76 torr. What is the vapor pressure (in torr) of water over an aqueous solution of CaCl₂, made to the same concentration as the methanol solution and also at 25 °C? Note: Assume ideal van't Hoff factors.

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.