Laboratory Questions Circle the questions that have been assigned. 1. Part A.1·T
ID: 1079882 • Letter: L
Question
Laboratory Questions Circle the questions that have been assigned. 1. Part A.1·The aluminum sample is not cut into small pieces but rather left as one large piece. a. How will this oversight affect the progress of completing the experimental procedure? Explain. b. Will t he percent yield of the alum be too high, too low, or unaffected by the oversight? Explain. 2. Part A.3. Aluminum pieces inadvertently collect on the filter. a. If left on the filter, will the percent yield of the alum be reported as too high or as too low? Explain b. If the aluminum pieces are detected on the filter, what steps would be used to remedy the observation? Explain 3. Part A.4. In a hurry to complete the synthesis, Jerry used 6 M HCI, also on the reagent shelf, instead of the 6 M H,SO. As a result, describe what observation he would expect in Part A.6. 4. Part A.4. Andrea used too much sulfuric acid. What observation would she expect in Part A.6? Explain. 5. Part A.7. Explain why the alum crystals are washed free of impurities with ethanol-ice-water mixture rather than with room-temperature deionized water. 6 Part A 8 Explain why a percent yield of greater than 100% might be reported for the synthesis of an alum. 7. Part B.2. Explain why the melting point of your prepared alum must either be equal to or be less than the actual melting point of the alum. Consult with your laboratory instructor 8. Experimentally, how can the moles of the waters of hydration in an alum sample be determined? See Experiment 5 9. A greater yield and larger alum crystals may be obtained by allowing the alum solution to cool in a refrigerator overnight or for a few days. Explain. 206 Synthesis of Potassium AlumExplanation / Answer
Laboratory Questions Circle the questions that have been assigned. 1. Part A.1·T
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.