Diethyl Ether Has a Vapor Pressure of 400

question 10

Multiple Choice

Diethyl ether has a vapor pressure of 400.0 torr at 18°C. When a sample of benzoic acid is dissolved in ether, the vapor pressure of the solution is 342 torr. What is the mole fraction of benzoic acid in the solution?

• A)0.0169
• B)0.0197
• C)0.145
• D)0.855
• E)None of these choices are correct.

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