Which of the following method is based on the solubility difference between the analyte and the unwanted components?
Correct answer: D. Precipitation
- A. Distillation
- B. Complex formation
- C. Electrodeposition
- D. Precipitation
Explanation
Precipitation is a separation technique where a reagent is added to a solution to selectively convert the analyte into an insoluble solid (precipitate). This allows it to be physically separated from the other soluble components of the mixture.
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Analytical chemistry identifies and measures substances using separation and instrumental methods. Chromatography is studied through stationary and mobile phases, retention and Rf values, while spectroscopy connects absorption of electromagnetic radiation with molecular structure and supports qualitative and quantitative analysis through techniques such as UV-visible and infrared spectroscopy.
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