Which of the following statement 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 benzene
(b) The vapour will contain a higher percentage of toluene
(c) The vapour will contain equal amounts of benezene and toluene
(d) Not enough information is given to make a predication
Answers
Answer:
Explanation:
Given Which of the following statement 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 k Pa, toluene = 3.85 k Pa)
(a) The vapour will contain a higher percentage of benzene
(b) The vapour will contain a higher percentage of toluene
(c) The vapour will contain equal amounts of benzene and toluene
(d) Not enough information is given to make a predication
A component having vapour pressure will have a higher percentage in the vapour pressure. Now toluene has a vapour pressure of 3.85 k pa and benzene has a vapour pressure of 12.8 k pa which is greater than toluene. So the vapour will contain a higher percentage of benzene.
So the option (a) holds good that is The vapour will contain a higher percentage of benzene.