What I can offer is a review of the key concepts typically covered in a Fractional Precipitation POGIL, along with a guide to what a strong answer would include. This will help you check your own understanding and complete the activity correctly.
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Fractional precipitation is a technique used to separate two or more ions from a solution based on their different solubilities in water. This method is commonly used to purify substances and to separate ions that are present in small concentrations. What I can offer is a review of
Determine Order: The ion that requires the lowest concentration of the added reagent will precipitate first. This method is commonly used to purify substances
Visual Models: Most versions include particle-level diagrams to help "see" the ions crashing out of solution.