At 25 degrees C a solution consists of 0.650 mole pentane, C5H12, and 0.250 mole of cyclopentane, C5H10.  What is the lowering of the vapor pressure of pentane in this solution?  The vapor pressure of the pure liquids at 25 degrees C are 451 torr for Pentane ad 321 torr for Cyclopentage.  Assume the solution is ideal.

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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.