CHE 249 Separation Processes Quiz

What is the primary mechanism for mass transfer in separation processes?

• Centrifugation

• Diffusion

• Filtration

• Settling

Which process involves the removal of solute from a solution by precipitating the solute?

• Distillation

• Adsorption

• Evaporation

• Crystallization

Liquid-liquid extraction involves the transfer of solute of a liquid solution by contact with another insoluble liquid. What are the two resulting streams from this contact?

• Extract and Raffinate

• Feed and Diluent

• Carrier and Solution

• Solute and Solvent

What is the difference between Liquid-liquid Extraction (LLE) and the distillation process in the separation of liquid mixtures?

• LLE requires heat supply, while distillation requires mechanical energy

• LLE depends on differences in vapor pressure, while distillation depends on solubilities

• LLE produces a new solution, while distillation requires azeotropic mixtures

• LLE is a primary choice for separation, while distillation is a secondary choice

What is the equilibrium data used in extraction systems to determine compositions and mass flow rates?

• Cartesian coordinates

• Triangular coordinates

• Polar coordinates

• Rectangular coordinates

In a single-stage liquid-liquid extraction, what is the exiting phase rich in carrier?

• Extract

• Solvent

• Raffinate

• Feed

What is the primary measure of the degree of separation in liquid-liquid extraction?

• Solubility

• Equilibrium

• Relative Volatility

• Selectivity

Which process involves the extraction of the vapor phase with a solvent?

• Extractive Distillation

• Adsorption

• Crystallization

• Distillation

What is the main focus of mass transfer in separation processes?

• Diffusion of solute through a semipermeable membrane barrier

• Removal of solute by contacting with another liquid solvent

• Transfer of heat from one place to another

• Movement of mass due to a concentration difference