Here, precipitates first (smaller required [C₂O₄²⁻]). But the required concentrations are very close (ratio only ~28:1). Complete separation would be difficult.
What I can offer is a review of the 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. fractional precipitation pogil answer key best
The best answer key includes “What If?” scenarios to challenge these misconceptions. Here, precipitates first (smaller required [C₂O₄²⁻])
Answer: Ba2+ will precipitate first because BaSO4 has a lower solubility than CaSO4. What I can offer is a review of
A solution contains 0.1 M Ag+ and 0.1 M Na+ ions. If 0.1 M SO42- is added to the solution, which ion will precipitate first?
What follows is a model answer key for the most common POGIL on this topic. I’ve organized it into learning objectives, key questions, and the reasoning behind each correct answer.