Question

The vapor pressures of benzene and toluene are 14 kPa and 5.4 kPa, respectively. 46 mg of toluene (C7H8) and 117 mg of benzene (C6H6) are mixed. Use the following information to answer questions.

What is the mole fraction of benzene?

A) 0.333

B) 3.000

C) 0.25

D) 0.75

E) None of the above

What is the vapor pressure of benzene in the mixture?

A) 0.75 kPa

B) 14 kPa

C) 10.5 kPa

D) More info is needed

E) None of the above

What is the vapor pressure of toluene in the mixture?

A) 1.35kPa

B) 0.25 kPa

C) 5.4 kPa

D) More info is needed

E) None of the above

What is the vapor pressure of the mixture?

A) 0.75 kPa

B) 14 kPa

C) 10.5 kPa

D) More info is needed

E) None of the above

What is the mole fraction of benzene in the vapor phase?

A) 0.85

B) 0.75

C) 10.5

D) More info is needed

E) None of the above

Answer 1