Fractional Precipitation
| Also Known As | Selective precipitation, differential precipitation, stepwise precipitation |
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What is Fractional Precipitation?
Fractional precipitation is an analytical and preparative technique that uses a precipitating reagent to selectively separate ions from a solution based on differences in their solubility products (Ksp). By carefully controlling the concentration of the precipitating agent, ions with lower Ksp values can be selectively precipitated while others remain in solution.
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Fractional precipitation is an analytical and preparative technique that uses a precipitating reagent to selectively separate ions from a solution based on differences in their solubility products (Ksp). By carefully controlling the concentration of the precipitating agent, ions with lower Ksp values can be selectively precipitated while others remain in solution.
Separating metal ions in qualitative analysis. Purifying chemical compounds. Water treatment (selective removal of ions). Mining and hydrometallurgy (selective metal recovery). Analytical chemistry for ion identification. Preparing pure ionic compounds.
Precipitating reagents may be toxic (e.g., H₂S for sulfide precipitation). Handling of concentrated acids/bases for pH control. Filtration of fine precipitates — use appropriate respirator for dusts. Waste treatment required for precipitant-containing filtrates.