At a Given Temperature, You Have a Mixture of Benzene

question 14

Multiple Choice

At a given temperature, you have a mixture of benzene (P_vap = 745 torr) and toluene (P_vap = 290 torr) . The mole fraction of benzene in the solution is 0.590. Assuming ideal behavior, calculate the mole fraction of toluene in the vapor above the solution.

• A) 0.778
• B) 0.641
• C) 0.355
• D) 0.213
• E) 0.590

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Definitions:

Stomach

Large sac between the esophagus and the small intestine, lying just beneath the diaphragm.

Enterogastric Reflex

A physiological process that slows the emptying of the stomach contents into the small intestine.

Duodenal Wall

The lining of the duodenum, which is the first part of the small intestine immediately beyond the stomach.

Secretin

A hormone secreted by the small intestine, which stimulates the secretion of pancreatic juice and bile.