Fractional Precipitation Pogil Answer Key Best !!top!! Guide

Separating two or more ions in solution by adding a precipitating agent that forms an insoluble salt with each ion, but at different minimum concentrations (due to different ( K_sp ) values). The less soluble compound (smaller ( K_sp )) precipitates first.

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PbCrO₄ precipitates first (much lower [Pb²⁺]). Separating two or more ions in solution by