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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![3.
4.
Experiment 4
Page 2
CHEM 125L
The standard solutions are prepared according to Table 1.
Final volume is 25.0 ml for each standard.
The solvent is 0.1 M nitric acid.
Do not use water to bring the volume to 25.0 mL.
Plot the data of [FESCN2+] vs. Absorbance.
Find the equation of the line.
You will need this for Part B.
Table 1
Vol. of 0.20 M
Fe(NOs)s (mL)
Standard Solution
Absorbance at 447
Vol. of 0.001 M
NaSCN (mL)
[FESCN2*]
Blank
10.0
10.0
0.076
1.0
1.
10.0
2.0
0-172
2.
10.0
3.0
0.340
10.0
10.0
5.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0b2d8d84-896e-4f9e-963b-da7844b9b0f5%2F1af2368b-5e92-424a-b6a3-797d98725f6f%2F1znrmn7.jpeg&w=3840&q=75)
Transcribed Image Text:3.
4.
Experiment 4
Page 2
CHEM 125L
The standard solutions are prepared according to Table 1.
Final volume is 25.0 ml for each standard.
The solvent is 0.1 M nitric acid.
Do not use water to bring the volume to 25.0 mL.
Plot the data of [FESCN2+] vs. Absorbance.
Find the equation of the line.
You will need this for Part B.
Table 1
Vol. of 0.20 M
Fe(NOs)s (mL)
Standard Solution
Absorbance at 447
Vol. of 0.001 M
NaSCN (mL)
[FESCN2*]
Blank
10.0
10.0
0.076
1.0
1.
10.0
2.0
0-172
2.
10.0
3.0
0.340
10.0
10.0
5.
Expert Solution
Step 1
The concentration of FeSCN + 2 at equilibrium is equal to the concentration of added NaSCN:
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