Pentane (C; H12) and hexane (C6H14) form an ideal solution. At 25°C the vapor pressures of pentane and hexane are 511 and 150 torr, respectively. A solution is prepared by mixing 25 mL pentane (density, 0.63 g/mL) with 58 mL hexane (density, 0.66 g/mL). a. What is the vapor pressure of the resulting solution? Protal = torr b. What is the composition by mole fraction of pentane in the vapor that is in equilibrium with this solution? Xpen =

Pentane (C; H12) and hexane (C6H14) form an ideal solution. At 25°C the vapor pressures of pentane and hexane are 511 and 150 torr, respectively. A solution is prepared by mixing 25 mL pentane (density, 0.63 g/mL) with 58 mL hexane (density, 0.66 g/mL). a. What is the vapor pressure of the resulting solution? Protal = torr b. What is the composition by mole fraction of pentane in the vapor that is in equilibrium with this solution? Xpen =

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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Pentane (C3H12) and hexane (C,H14) form ideal solution. At 25°C the vapor pressure of pentane and hexane are 511 torr and 150. torr, respectively. A solution is prepared by mixing 30.0 mL pentane (density = 0.63 g/mL) with 45.0 mL hexane (density = 0.66 g/mL). (a) What are the mole fractions of pentane and hexane, respectively, in the solution? (b) What is the total vapor pressure of the solution at 25°C? (c) What are the mole percent of pentane and hexane, respectively, in the vapor phase at 25°C? (Molar mass of pentane and hexane are: 72.15 g/mol and 86.17 g/mol, respectively.)