A. Dilute solutions, over a small concentration range
B. Gaseous solutions at high pressure
C. Concentrated solutions
D. None of these
Related Mcqs:
- Freundlich equation applies to the adsorption of solute from___________________?
A. Dilute solutions, over a small concentration range
B. Gaseous solutions at high pressure
C. Concentrated solutions
D. None of these - Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysteresis. In such cases, the desorption equilibrium pressure is ______________ that obtained for adsorption?
A. Lower than
B. Higher than
C. Same as
D. Either same or higher than - In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is_________________?
A. Equal to the heat of formation of surface compound
B. Equal to the heat of wetting
C. Zero
D. Called integral heat of adsorption - In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is__________________?
A. Equal to the heat of formation of surface compound
B. Equal to the heat of wetting
C. Zero
D. Called integral heat of adsorption - When adsorption hysteresis is observed, the desorption equilibrium pressure is _________________ that obtained by adsorption?
A. Always lower than
B. Always higher than
C. Same as
D. Dependent on the system; can be either lower or higher than - In a liquid-liquid extraction, 10 kg of a solution containing 2 kg of solute C and 8 kg of solvent A is brought into contact with 10 kg of solvent B. Solvent A and B are completely immiscible in each other whereas solute C is soluble in both the solvents. The extraction process attains equilibrium. The equilibrium relationship between the two phases is Y* = 0.9X, where Y* is the kg of C/kg of B and X is kg of C/kg of A. Choose the correct answer?
A. The entire amount of C is transferred to solvent B
B. Less than 2 kg but more than 1 kg of C is transferred to solvent B
C. Less than 1 kg of C is transferred to B
D. No amount of C is transferred to B - _______________ equation applies to diffusivities in liquids?
A. Gilliland
B. Hirschfelder
C. Wilke and Chang
D. None of these - Rayleigh equation applies to _________________ distillation ?
A. Differential
B. Flash
C. Equilibrium
D. Molecular - Rayleigh’s equation applies to ________________ distillation?
A. Continuous
B. Steam
C. Differential
D. Flash - Rayleigh’s equation applies to _________________ distillation?
A. Continuous
B. Steam
C. Differential
D. Flash
