Question

QUESTIONS (Submit your answers on a separate sheer if necessary Circle the questions that have been assigned 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 the percent yield of the alum be too high, too low, or unaffected by the oversight? Explain. 2. 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. In a hurry to complete the synthesis, Bill used 6 M HCI also on the reagent shelf. instead of the 6MH,SO. As a result, describe what observation would he expect 4. Andrea used too much sulfuric acid. What observation would she expect? Explain. 5. Explain why the alum crystals are washed free of impurities with ethanol-ice-water mixture rather than with room temperature deionized water. 6. 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. 7. Experimentally, how can the moles of the waters of hydration in an alum sample be determined? 8. 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. Experiment 6 Synthesis of Al

Answer 1

ANSWER 0 a) If the Aluminium the Aluminium Sample is left as one large Sant Peics, the goll would be very slow to a Vather than it is chopped up, which mean's a lot of time's neede gav dissolving for large peices. That is got the Completion of the experimental action, at taka's a lot of time got large Aluminium peice and a short time good chopped One Yes, at may affect the percent geild, but ig the Alloninium peire Completely dissolale's, the result would be unchanged is at as not like that the penent yeild would be very low.