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3. A solution is 40.0% by mass benzene (molar mass = 78.113 g/mol) in carbon tetrachloride (molar mass = 153.823 g/mol) at 20.0 °C. The vapor pressure of pure benzene is 74.61 mmHg and pure carbon tetrachloride is 91.32 mmHg at this temperature. a) What is the vapor pressure of this solution at this temperature? b) What is the mole fraction of benzene in the vapor above the solution at this temperature?

3. A solution is 40.0% by mass benzene (molar mass = 78.113 g/mol) in carbon tetrachloride (molar mass = 153.823 g/mol) at 20.0 °C. The vapor pressure of pure benzene is 74.61 mmHg and pure carbon tetrachloride is 91.32 mmHg at this temperature. a) What is the vapor pressure of this solution at this temperature? b) What is the mole fraction of benzene in the vapor above the solution at this temperature?

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter13: The Chemistry Of Solutes And Solutions
Section: Chapter Questions
Problem 106QRT: Calculate the molality of a solution made by dissolving 115.0 g ethylene glycol, HOCH2CH2OH, in 500....
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3. A solution is 40.0% by mass benzene (molar mass = 78.113 g/mol) in carbon tetrachloride (molar mass = 153.823 g/mol) at 20.0 °C. The vapor pressure of pure benzene is 74.61 mmHg and pure carbon tetrachloride is 91.32 mmHg at this temperature. a) What is the vapor pressure of this solution at this temperature? b) What is the mole fraction of benzene in the vapor above the solution at this temperature?
Transcribed Image Text:3. A solution is 40.0% by mass benzene (molar mass = 78.113 g/mol) in carbon tetrachloride (molar mass = 153.823 g/mol) at 20.0 °C. The vapor pressure of pure benzene is 74.61 mmHg and pure carbon tetrachloride is 91.32 mmHg at this temperature. a) What is the vapor pressure of this solution at this temperature? b) What is the mole fraction of benzene in the vapor above the solution at this temperature?
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