Hexane and heptane are completely miscible. At 25 °C, the vapor pressures of hexane and heptane are 0.198 atm and 0.06 atm, respectively. The mole fractions of hexane and heptane in the vapor phase for a solution containing 4 M hexane and 6 M heptane, respectively, are:

Hexane and heptane are completely miscible. At 25 °C, the vapor press

1.	Hexane and heptane are completely miscible. At 25 °C, the vapor pressures of hexane and heptane are 0.198 atm and 0.06 atm, respectively. The mole fractions of hexane and heptane in the vapor phase for a solution containing 4 M hexane and 6 M heptane, respectively, are:
A.	0.688 and 0.312
B.	0.400 and 0.600
C.	0.312 and 0.688
D.	0.600 and 0.400
Answer» B. 0.400 and 0.600