At 60°C, the vapor pressure of ethanol is 352.7 mm Hg and that of methanol is 625.0 mm Hg. These two substances form an ideal solution. For a liquid solution that contains 60% mole ethanol, calculate the: a. vapor pressure (mm Hg) of the mixture: ANSWER (in 2 decimal places, no unit required): mm Hg b. mole fraction of methanol in the vapor in equilibrium with the mixture:

At 60°C, the vapor pressure of ethanol is 352.7 mm Hg and that of methanol is 625.0 mm Hg. These two substances form an ideal solution. For a liquid solution that contains 60% mole ethanol, calculate the: a. vapor pressure (mm Hg) of the mixture: ANSWER (in 2 decimal places, no unit required): mm Hg b. mole fraction of methanol in the vapor in equilibrium with the mixture:

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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Concept explainers

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

answer d only

At 60°C, the vapor pressure of ethanol is 352.7 mm Hg and that of methanol is 625.0 mm Hg.
These two substances form an ideal solution. For a liquid solution that contains 60% mole ethanol,
calculate the:
a. vapor pressure (mm Hg) of the mixture:
ANSWER (in 2 decimal places, no unit required):
mm Hg
b. mole fraction of methanol in the vapor in equilibrium with the mixture:
ANSWER (in 2 decimal places):
c. mole fraction of methanol in the last drop of liquid before vaporization becomes complete:
ANSWER (in 2 decimal places):
d. pressure (mm Hg) at which the mixture will completely vaporize (at 60°C):
ANSWER (in 2 decimal places, no unit required):
mm Hg

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