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(b) Determine the equilibrium concentrations for Fe* (aq), SCN" (aq), and Fe(SCN)²* (aq). [Fe* ]eg =8.2 x 10 M [SCN Jeq = 8.2 x 10-3 M [Fe(SCN)* Jeg =[1.84 |× 103 M Part 3: (c) Based on the experimental data, what is the K¸? K. = 27 Part 4 out of 4 (d) If under the student's experimental conditions, the actual value of K, for this equilibrium is 45. From the statements below, identify the possible source(s) of error for this student's trial. To calibrate the spectrophotometer, water was used as a blank. To calibrate the spectrophotometer, 0.750 M Fe(NO3)3 solution was used as a blank. Finger prints on the cuvette containing the Fe(SCN)²* solution were not wiped off before collecting the absorbance. There was an error extrapolating the calibration curve, where the experimentally determined molar absorptivity coefficient is smaller than its true value. None of the statements listed would contribute to the error in this student's trial.

(b) Determine the equilibrium concentrations for Fe* (aq), SCN" (aq), and Fe(SCN)²* (aq). [Fe* ]eg =8.2 x 10 M [SCN Jeq = 8.2 x 10-3 M [Fe(SCN)* Jeg =[1.84 |× 103 M Part 3: (c) Based on the experimental data, what is the K¸? K. = 27 Part 4 out of 4 (d) If under the student's experimental conditions, the actual value of K, for this equilibrium is 45. From the statements below, identify the possible source(s) of error for this student's trial. To calibrate the spectrophotometer, water was used as a blank. To calibrate the spectrophotometer, 0.750 M Fe(NO3)3 solution was used as a blank. Finger prints on the cuvette containing the Fe(SCN)²* solution were not wiped off before collecting the absorbance. There was an error extrapolating the calibration curve, where the experimentally determined molar absorptivity coefficient is smaller than its true value. None of the statements listed would contribute to the error in this student's trial.

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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ANSWER PART 3 AND PART 4

(b) Determine the equilibrium concentrations for Fe* (aq), SCN" (aq), and Fe(SCN)²* (aq). [Fe* ]eg =8.2 x 10 M [SCN Jeq = 8.2 x 10-3 M [Fe(SCN)* Jeg =[1.84 |× 103 M Part 3: (c) Based on the experimental data, what is the K¸? K. = 27 Part 4 out of 4 (d) If under the student's experimental conditions, the actual value of K, for this equilibrium is 45. From the statements below, identify the possible source(s) of error for this student's trial. To calibrate the spectrophotometer, water was used as a blank. To calibrate the spectrophotometer, 0.750 M Fe(NO3)3 solution was used as a blank. Finger prints on the cuvette containing the Fe(SCN)²* solution were not wiped off before collecting the absorbance. There was an error extrapolating the calibration curve, where the experimentally determined molar absorptivity coefficient is smaller than its true value. None of the statements listed would contribute to the error in this student's trial.
Transcribed Image Text:(b) Determine the equilibrium concentrations for Fe* (aq), SCN" (aq), and Fe(SCN)²* (aq). [Fe* ]eg =8.2 x 10 M [SCN Jeq = 8.2 x 10-3 M [Fe(SCN)* Jeg =[1.84 |× 103 M Part 3: (c) Based on the experimental data, what is the K¸? K. = 27 Part 4 out of 4 (d) If under the student's experimental conditions, the actual value of K, for this equilibrium is 45. From the statements below, identify the possible source(s) of error for this student's trial. To calibrate the spectrophotometer, water was used as a blank. To calibrate the spectrophotometer, 0.750 M Fe(NO3)3 solution was used as a blank. Finger prints on the cuvette containing the Fe(SCN)²* solution were not wiped off before collecting the absorbance. There was an error extrapolating the calibration curve, where the experimentally determined molar absorptivity coefficient is smaller than its true value. None of the statements listed would contribute to the error in this student's trial.
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