Which of the following statements about the composition of the vapour over an ideal `1:1` mol mixture of benzene and toluene is correct? Assume that the temperature is constant at `25^(@)C`. (Given: vapour pressure Date at `25^(@)C`, benzene=12.8 kP, toluene=3.85 kPa)

Options

A. The vapour will contain a higher percentage of toluene
B. The vapour will contain equal amounts of benzene toluene
C. Not enough information is given to make a prediction
D. The vapour will contain a higher percentage of benzene

Answer

D

Explanation

Since, component having higher vapour pressure will have higher percentage in vapour phase. Benzene has vapour pressure 12.8 kPa which is greater toluene 3.85 kPa. Therefore, the vapour will contain a higher percentage of benzene.