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6. Using Table 2.3 below, identify your unknown electrolyte: TABLE 2.3 Salt van't Hoff i Salt van't Hoff i K,so, 2.32 MgCl, 2.70 KBr 1.88 MgSO, 1.21 7. Suppose that in Part II, Step 3, a student did not completely dissolve the urea sample. a. Will the freezing point depression, AT, of the solution be larger or smaller than it would have been if the compound was dissolved completely? Justify your answer with an explanation. b. Will the calculated freezing point depression constant, Kf, be larger or smaller than it would have been if the compound was dissolved completely? Justify your answer with an explanation. 8. In order to avoid the possibility of 2-hour delays this winter, EKU will be stockpiling de-icing salts to help keep the roads and sidewalks clear. Facility Services has been quoted the following prices: • K,SO;: $5.35/kg • MgSO,: $4.55/kg Which salt provides a better value? Support your answer with a calculation.

6. Using Table 2.3 below, identify your unknown electrolyte: TABLE 2.3 Salt van't Hoff i Salt van't Hoff i K,so, 2.32 MgCl, 2.70 KBr 1.88 MgSO, 1.21 7. Suppose that in Part II, Step 3, a student did not completely dissolve the urea sample. a. Will the freezing point depression, AT, of the solution be larger or smaller than it would have been if the compound was dissolved completely? Justify your answer with an explanation. b. Will the calculated freezing point depression constant, Kf, be larger or smaller than it would have been if the compound was dissolved completely? Justify your answer with an explanation. 8. In order to avoid the possibility of 2-hour delays this winter, EKU will be stockpiling de-icing salts to help keep the roads and sidewalks clear. Facility Services has been quoted the following prices: • K,SO;: $5.35/kg • MgSO,: $4.55/kg Which salt provides a better value? Support your answer with a calculation.

Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter10: Properties Of Solutions
Section: Chapter Questions
Problem 7RQ
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Experiment 2: Colligative Propertles: Freezing Point Depression 6. Using Table 2.3 below, identify your unknown electrolyte: TABLE 2.3 Salt van't Hoff i Salt van't Hoff i 2.32 K,SO, MgCl, 2.70 KBr 1.88 MgSO, 1.21 7. Suppose that in Part II, Step 3, a student did not completely dissolve the urea sample. a. Will the freezing point depression, AT,, of the solution be larger or smaller than it would have been if the compound was dissolved completely? Justify your answer with an explanation. b. Will the calculated freezing point depression constant, Kf, be larger or smaller than it would have been if the compound was dissolved completely? Justify your answer with an explanation. 8. In order to avoid the possibility of 2-hour delays this winter, EKU will be stockpiling de-icing salts to help keep the roads and sidewalks clear. Facility Services has been quoted the following prices: • K,SO,: $5.35/kg • MGSO,: $4.55/kg Which salt provides a better value? Support your answer with a calculation.
Transcribed Image Text:Experiment 2: Colligative Propertles: Freezing Point Depression 6. Using Table 2.3 below, identify your unknown electrolyte: TABLE 2.3 Salt van't Hoff i Salt van't Hoff i 2.32 K,SO, MgCl, 2.70 KBr 1.88 MgSO, 1.21 7. Suppose that in Part II, Step 3, a student did not completely dissolve the urea sample. a. Will the freezing point depression, AT,, of the solution be larger or smaller than it would have been if the compound was dissolved completely? Justify your answer with an explanation. b. Will the calculated freezing point depression constant, Kf, be larger or smaller than it would have been if the compound was dissolved completely? Justify your answer with an explanation. 8. In order to avoid the possibility of 2-hour delays this winter, EKU will be stockpiling de-icing salts to help keep the roads and sidewalks clear. Facility Services has been quoted the following prices: • K,SO,: $5.35/kg • MGSO,: $4.55/kg Which salt provides a better value? Support your answer with a calculation.
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