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*from previous experiment: Ksp= 8.30x10^-12 answer A, B, and C a. Give the equation of the best fit line (with r squared) for the corresponding van't Hoff plot. b. Calculate the experimental Ksp of the unknown salt at 298 K. c. If a published journal reports that the theoretical value is 8.00x10^-12, will CL's experiment be sufficient to convince Dr. Yang?

*from previous experiment: Ksp= 8.30x10^-12 answer A, B, and C a. Give the equation of the best fit line (with r squared) for the corresponding van't Hoff plot. b. Calculate the experimental Ksp of the unknown salt at 298 K. c. If a published journal reports that the theoretical value is 8.00x10^-12, will CL's experiment be sufficient to convince Dr. Yang?

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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*from previous experiment: Ksp= 8.30x10^-12

answer A, B, and C

a. Give the equation of the best fit line (with r squared) for the corresponding van't Hoff plot.

b. Calculate the experimental Ksp of the unknown salt at 298 K.

c. If a published journal reports that the theoretical value is 8.00x10^-12, will CL's experiment be sufficient to convince Dr. Yang?

CL was tasked to identify the white solid inorganic salt that Dr. Yang gave her. From her preliminary tests, the possible identities were narrowed down to the following: Zn(CN)2 Ksp (30°C) = 7.30 x 10-12 AgSCN Ksp (30°C) = 5.90 × 10-11 CL chose to investigate the solubility equilibrium of this salt and determine its identity. To a 100.0 mL distilled water at room temperature, CL added the unknown reagent until it no longer dissolves. After letting the mixture stand for 15 mins, she filtered and collected the filtrate in another beaker. From this, a 20.00 mL aliquot was drawn and was titrated with 10.20 M of 5.00 x 10-4 M HCI to reach the phenolphthalein endpoint. When she submitted her report to Dr. Yang, the latter was not convinced because he wants a highly accurate result (i.e. less than 5% error). Thus, to further support her claim, CL performed additional trials at different temperatures, as shown. T, K Calculated Ksp 303.15 from previous experiment 323.15 4.61 x 10-12 283.15 1.19 x 10-11
Transcribed Image Text:CL was tasked to identify the white solid inorganic salt that Dr. Yang gave her. From her preliminary tests, the possible identities were narrowed down to the following: Zn(CN)2 Ksp (30°C) = 7.30 x 10-12 AgSCN Ksp (30°C) = 5.90 × 10-11 CL chose to investigate the solubility equilibrium of this salt and determine its identity. To a 100.0 mL distilled water at room temperature, CL added the unknown reagent until it no longer dissolves. After letting the mixture stand for 15 mins, she filtered and collected the filtrate in another beaker. From this, a 20.00 mL aliquot was drawn and was titrated with 10.20 M of 5.00 x 10-4 M HCI to reach the phenolphthalein endpoint. When she submitted her report to Dr. Yang, the latter was not convinced because he wants a highly accurate result (i.e. less than 5% error). Thus, to further support her claim, CL performed additional trials at different temperatures, as shown. T, K Calculated Ksp 303.15 from previous experiment 323.15 4.61 x 10-12 283.15 1.19 x 10-11
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