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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
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
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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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