Raoult's law – composition of vapour phase

2016 1 question

1. 1 Solutions
   Which of the following statements about the composition of the vapour over an ideal 1 : 1 molar mixture of benzene and toluene is correct? Assume that the temperature is constant at 25°C. (Given, vapour pressure data at 25°C, benzene = 12.8 kPa, toluene = 3.85 kPa)
   A The vapour will contain a higher percentage of toluene. B The vapour will contain equal amounts of benzene and toluene. C Not enough information is given to make a prediction. D The vapour will contain a higher percentage of benzene.
   Check Answer