At a given temperature, the vapour pressure of pure liquid A is 300 mmHg and that of pure liquid B is 500 mmHg. A solution of A and B shows a total vapour pressure of 400 mmHg. Assuming ideal behavior, what is the mole fraction of A in the liquid phase?
0.2
0.5
0.8
1.0
Related Questions
Which one of the following is TRUE for a solution showing negative deviation from Raoult's law?
A-B interactions are weaker than A-A and B-B interactions
A binary solution of liquids A and B deviates positively from Raoult's law. Which of the following statements is NOT true for this solution?
The total vapour pressure of the solution is greater than the ideal vapour pressure.
The intermolecular forces between A-A and B-B are stronger than those between A-B.
The enthalpy of mixing () is positive.
The volume of mixing () is positive.
Which of the following factors does NOT affect the solubility of a solid in a liquid?
Temperature
Pressure
Nature of solute and solvent
Volume of the solvent
An ideal solution is formed when two liquids A and B are mixed. Which of the following is NOT a characteristic of this ideal solution?
The partial pressure of A follows Raoult's Law.
The interaction between A and B molecules is stronger than the interactions between A-A and B-B molecules.
Which one of the following is incorrect for ideal solution?
ฮHmix = 0
ฮVmix = 0
ฮGmix < 0
ฮHmix > 0
Which of the following statements is NOT true for an ideal solution?
It obeys Raoult's law.
The enthalpy of mixing is zero.
The volume change on mixing is zero.
The interaction between unlike molecules is stronger than the interaction between like molecules.
At a given temperature, the vapour pressure of pure liquid A is 300 mmHg and that of pure liquid B is 500 mmHg. A solution of A and B shows a total vapour pressure of 400 mmHg. Assuming ideal behavior, what is the mole fraction of A in the liquid phase?
0.2
0.5
0.8
1.0
A solution where the solvent is water is called:
Non-aqueous solution
Solid solution
Gaseous solution
Aqueous solution
Air is an example of which type of solution?
Solid solution
Liquid solution
Gaseous solution
Colloidal solution
A solution in which the solute is present in a very small amount is called a:
Concentrated solution
Dilute solution
Saturated solution
Supersaturated solution
