A student carried out an experiment to determine the equilibrium constant between Fe³ and SCN reaction. First, student performed a standard curve experiment and obtain the following graph given in the figure. Then student carried out an experiment to determine the equilibrium constant using 5 different test tubes. The data obtained for the 5 different test tubes is given in the second Figure. Calculate the equilibrium constant for Row 3. Provide the answer to 2 decimal places. Here is the equilibrium reaction between Fe³+ and SCN". Fe3+ FeSCN² (aq) - (aq) + SCN (aq)
A student carried out an experiment to determine the equilibrium constant between Fe³ and SCN reaction. First, student performed a standard curve experiment and obtain the following graph given in the figure. Then student carried out an experiment to determine the equilibrium constant using 5 different test tubes. The data obtained for the 5 different test tubes is given in the second Figure. Calculate the equilibrium constant for Row 3. Provide the answer to 2 decimal places. Here is the equilibrium reaction between Fe³+ and SCN". Fe3+ FeSCN² (aq) - (aq) + SCN (aq)
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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Can anyone determine the equilibrium constant for row 3??
![FeSCN2+ standard curve
2.50E+00
y=7124x+0.0024
R=0.9831
2.00E+00
1.50E+00
1.00E+00
5.00E-01
0.00E+00
0.00E+00 5.00E-05 1.00E-04 1.50E-04 2.00E-04 2.50E-04 3.00E-04 3.50E-04
[FeSCN2+] (M)
mL SCN-
mL water
initial
[SCN-]
Abs 447
1.0
4.0
0.0002
0.213
2.0
3.0
0.0004
0.386
3.0
2.0
0.0006
0.513
4.0
1.0
0.0008
0.655
5.0
0
0.001
0.766
Abs 447 nm
mL Fe
1 5.0
2
5.0
3
4
5
5.0
5.0
5.0
initial [Fe]
0.001
0.001
0.001
0.001
0.001
Jay](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fad8fd0df-71c3-40b0-a242-3f0f1a96b8ac%2Fdef42b93-85c3-4dc7-9c7a-4c7af25a43a4%2Faoj53ut_processed.jpeg&w=3840&q=75)
Transcribed Image Text:FeSCN2+ standard curve
2.50E+00
y=7124x+0.0024
R=0.9831
2.00E+00
1.50E+00
1.00E+00
5.00E-01
0.00E+00
0.00E+00 5.00E-05 1.00E-04 1.50E-04 2.00E-04 2.50E-04 3.00E-04 3.50E-04
[FeSCN2+] (M)
mL SCN-
mL water
initial
[SCN-]
Abs 447
1.0
4.0
0.0002
0.213
2.0
3.0
0.0004
0.386
3.0
2.0
0.0006
0.513
4.0
1.0
0.0008
0.655
5.0
0
0.001
0.766
Abs 447 nm
mL Fe
1 5.0
2
5.0
3
4
5
5.0
5.0
5.0
initial [Fe]
0.001
0.001
0.001
0.001
0.001
Jay
Transcribed Image Text:A student carried out an experiment to determine the equilibrium constant
between Fe³ and SCN reaction. First, student performed a standard curve
experiment and obtain the following graph given in the figure. Then
student carried out an experiment to determine the equilibrium constant
using 5 different test tubes. The data obtained for the 5 different test tubes
is given in the second Figure. Calculate the equilibrium constant for Row 3.
Provide the answer to 2 decimal places.
Here is the equilibrium reaction between Fe³+ and SCN".
Fe³(aq) + SCN (
FeSCN²+
(aq) →
(aq)
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