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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
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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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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