Centrifugation, Decantation, and Filtration Quiz

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What is the purpose of centrifugation?

Analyzing complicated material samples

Pouring a liquid gently to avoid disturbing solids

Purifying a solid based on solubility

Separating solid matter from a liquid suspension (correct)

Which process involves pouring a liquid gently to avoid disturbing the solid at the bottom of the container?

Centrifugation

Filtration

Recrystallization

Decantation (correct)

What is the liquid that passes through the filter paper called?

Flocculent

Precipitate

Centrifugate

Filtrate (correct)

What are substances other than the analyte that affect the final measurement called?

Interferences Signup and view all the answers

What is the key to recrystallization as a purification technique for solids?

Minimum amount of solvent Signup and view all the answers

What is the purpose of cooling the filtrate?

To remove soluble impurities Signup and view all the answers

What is the principle behind distillation as a purification method?

Separation based on the boiling points of contaminants and the liquid to be purified Signup and view all the answers

What distinguishes fractional distillation from simple distillation?

Fractional distillation includes repeated evaporation-condensation steps in a fractionating column Signup and view all the answers

In Liquid-Liquid Extraction, why is there a need to separate the analyte from the original solvent?

Due to interference with the analysis technique chosen Signup and view all the answers

What is the purpose of leaving the separatory funnel undisturbed after shaking in Liquid-Liquid Extraction?

To allow time for the immiscible layers to separate again Signup and view all the answers

Centrifugation, Decantation, and Filtration Quiz

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Questions and Answers

What is the purpose of centrifugation?

Which process involves pouring a liquid gently to avoid disturbing the solid at the bottom of the container?

What is the liquid that passes through the filter paper called?

What are substances other than the analyte that affect the final measurement called?

What is the key to recrystallization as a purification technique for solids?

What is the purpose of cooling the filtrate?

What is the principle behind distillation as a purification method?

What distinguishes fractional distillation from simple distillation?

In Liquid-Liquid Extraction, why is there a need to separate the analyte from the original solvent?

What is the purpose of leaving the separatory funnel undisturbed after shaking in Liquid-Liquid Extraction?

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