The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vaporised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is_________________?
Correct answer: B
Explanation
The mole fraction in the vapor phase is calculated using Raoult's Law and Dalton's Law. The calculation yields 0.6.