Pentane (C5H12) and hexane (C6H14) combine to form an ideal solution. At 25°C the vapor pressures of pentane and hexane are 513 and 152 torr, respectively. A solution is prepared by mixing 26 mL of pentane (density = 0.63 g/mL) with 70. mL of hexane (density= 0.66 g/mL). (a) What is the vapor pressure (in torr) of this solution? torr (b) What is the mole fraction of pentane in the vapor that is in equilibrium with this solution?

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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.