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?

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?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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.

Question

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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