Sophia and her friend Nora have the same unknown solid. Sophia has progressed a little faster with the purification process, but now she is standing around twiddling her thumbs because no crystals are forming, even over an ice bath. Nora decides that Sophia’s problem is too much solvent. Determined not to have the same problem, Nora uses a minimal volume of hot solvent to dissolve her compound before doing the gravity filtration step. She begins to pour her hot solution into the filter cone of a long-stemmed funnel and ….is that missed impurities sprouting up on the funnel walls? Why so shiny? Explain what Nora did wrong and how to fix the problem.
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Sophia and her friend Nora have the same unknown solid. Sophia has progressed a little faster with t...
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