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5 cards from this section. Quick, good the night before a test.
What is liquid-liquid extraction?
Think about the process of transferring a substance.
Name a key factor in solvent selection for extraction.
Consider how two liquids interact with each other.
What is the main purpose of liquid-liquid extraction?
Think about why extraction is performed.
True or False: A solvent must be miscible with water for effective liquid-liquid extraction.
Recall the definitions of miscibility.
You need to analyze a chemical in water from a polluted river. The analytical instrument's detection limit is 1 mg/L, but your samples show concentrations around 0.2 mg/L. How would you ensure the analyte is detectable?
Think about how extraction can amplify very low concentrations.
If a recovery test shows you recover only 75% of an added analyte during extraction, but your instrument measures 10 mg/L in the final sample, what is the actual concentration in the solution before the extraction?
Consider the impacts of recovery rate on the initial concentration.
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