Calculate the vapor pressure of ethanol, CH3CH₂OH, in a water solution containing 82.5% ethanol by volume at 19.0 °C. The vapor pressure of pure ethanol at 19.0 °C is 40.0 Torr. The density of ethanol is 0.789 g.mL-¹ and the density of water is 1.000 g.mL-1.

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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.