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 colloidal solution of gold nanoparticles is prepared by reduction of . Which of the following methods is MOST EFFECTIVE for purifying this solution from excess reactants and small ionic byproducts?
Filtration
Centrifugation
Dialysis
Evaporation
A solution is prepared by dissolving 0.25 moles of glucose in 500g of water. What is the molality of the glucose solution?
0.25 molal
0.5 molal
1 molal
2 molal
Which of the following physical properties of a metal is significantly affected by changes in temperature?
Density
Mass
Volume
Resistivity
A standard solution is one whose :
Concentration is 1
Concentration is unknown
Concentration is known
None of the above
How many moles of solute are present in a 2 molal solution containing 250g of solvent?
0.25 moles
0.5 moles
1 mole
2 moles
If we dissolve 20g of NaOH in 200ml of water, what will be the mass percentage of NaOH in the solution (assuming the density of water is 1g/ml)?
9.09%
10%
11.11%
20%
In a solution containing 0.1 moles of a solute and 5 moles of solvent, what is the mole fraction of the solvent?
0.02
0.10
0.98
5.0
In chromatography, the component that travels the furthest on the chromatogram is the one that is:
Most soluble in the mobile phase and least adsorbed to the stationary phase
Least soluble in the mobile phase and most adsorbed to the stationary phase
Equally soluble in both phases
Insoluble in both phases
The least count of burette used normally in laboratory is :
0.1 mL
0.01 mL
0.2 mL
0.02 mL
Crystallization is a purification technique based on the principle of:
Difference in solubility of the compound and impurities at different temperatures
Difference in melting points of the compound and impurities
Difference in boiling points of the compound and impurities
Difference in densities of the compound and impurities
