Solvent Extraction Quiz

What is the primary purpose of solvent extraction?

• To mix two immiscible liquids

• To quantitatively separate compounds

• To increase the boiling point of solvents

• To create chemical precipitation

Which of the following is NOT a commonly used solvent in solvent extraction?

• Benzene

• Ethyl acetate

• Chloroform

• Diethyl ether

What does the distribution coefficient (K) represent in solvent extraction?

• The temperature of the system

• The ratio of solute concentration in two phases

• The total volume of solvents used

• The time taken for extraction

Which factor does NOT affect solvent extraction?

• Presence of masking agents

• Color of the solute

• Viscosity of the solvent

• pH of the solution

What is the main advantage of solvent extraction over distillation?

• Higher energy consumption

• Better separation effect

• Lower production capacity

• More complex operation

In the context of solvent extraction, what is a separation factor?

• The ratio of distribution coefficients of two solutes

• The ratio of solute concentration in the organic phase

• The total volume of the aqueous phase

• The time taken for the extraction process

Which method is commonly used for small-scale solvent extraction?

• Ion-association method

• Continuous extraction

• Batch extraction

• Countercurrent extraction

What is the role of modifiers in solvent extraction?

• To stabilize the metal complex

• To change the pH of the solution

• To increase the solubility of solutes in the organic solvent

• To decrease the solubility of solutes

Which of the following is a technique used in solvent extraction?

• Sublimation

• Crystallization

• Chelate formation

• Filtration

What is the main disadvantage of single extraction in solvent extraction?

• It is time-consuming

• It does not achieve quantitative separation

• It requires high energy

• It is not cost-effective