A binary liquid mixture of components A and B exhibits an azeotrope at a specific composition. Which of the following statements is ALWAYS true about this azeotropic mixture?
The composition of the vapor phase is identical to the composition of the liquid phase.
The boiling point of the azeotrope is the average of the boiling points of pure A and B.
The azeotrope can be separated into pure A and B by fractional distillation.
The azeotrope always shows a positive deviation from Raoult's Law.
Related Questions
A binary solution of liquids A and B shows positive deviation from Raoult's law. Which of the following statements is TRUE?
The intermolecular forces between A and B are weaker than those between A-A and B-B.
The intermolecular forces between A and B are stronger than those between A-A and B-B.
The solution exhibits a negative deviation from Raoult's law.
The total vapor pressure of the solution is less than the sum of the vapor pressures of the pure components.
When one mole of reacts with , the volume of chlorine liberated at will be:
11.2 litre
22.4 litre
44.8 litre
56.0 litre
A metal M forms a volatile carbonyl complex . 0.525g of this complex is heated in a closed vessel of volume 250 mL at . The pressure inside the vessel after complete decomposition of the complex is 746 Torr. If the gas constant R is 0.0821 L atm , what is the value of x in the formula ? (Assume the metal M does not contribute significantly to the pressure)
3
4
2
5
100g of a liquid A (molar mass 140 g/mol) and 100g of liquid B (molar mass 70 g/mol) form an ideal solution. What is the mole fraction of B in the vapor phase? (Assume mmHg and mmHg)
1/3
2/3
1/2
3/4
A solution is prepared by dissolving 20g of a non-volatile solute in 180g of water. If the vapor pressure of pure water at this temperature is 23.76 mmHg and the solution exhibits a vapor pressure of 23.52 mmHg, what is the molar mass of the solute? (Molar mass of water = 18 g/mol)
99 g/mol
198 g/mol
297 g/mol
396 g/mol
When one mole of reacts with , the volume of chlorine liberated at will be:
11.2 litre
22.4 litre
44.8 litre
56.0 litre
A binary liquid mixture of components A and B exhibits an azeotrope at a specific composition. Which of the following statements is ALWAYS true about this azeotropic mixture?
The composition of the vapor phase is identical to the composition of the liquid phase.
The boiling point of the azeotrope is the average of the boiling points of pure A and B.
The azeotrope can be separated into pure A and B by fractional distillation.
The azeotrope always shows a positive deviation from Raoult's Law.
A solution is prepared by dissolving 2.5g of a non-volatile solute in 100g of water. The vapor pressure of the solution is found to be 22.87 Torr at . If the vapor pressure of pure water is 23.76 Torr at the same temperature, what is the molar mass of the solute (in g/mol)?
60
120
30
90
Henry's law constant for CO in water at 298K is 1.67 x 10 Pa. Calculate the mass of CO dissolved in 500 mL of soda water when packed under 2.5 atm CO pressure at 298K. (1 atm = 1.013 x 10 Pa, molar mass of CO = 44 g/mol)
1.85 g
0.83 g
3.70 g
0.42 g
