One published value for Keq for FeSCN2+ formation is approximately 113 at 20oC. Based on this value, does equilibrium favor the formation of FeSCN2+, or does it favor the reverse reaction? Briefly justify your answer.
One published value for Keq for FeSCN2+ formation is approximately 113 at 20oC. Based on this value, does equilibrium favor the formation of FeSCN2+, or does it favor the reverse reaction? Briefly justify your answer.
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...
Related questions
Question
One published value for Keq for FeSCN2+ formation is approximately 113 at 20oC. Based on this value, does equilibrium favor the formation of FeSCN2+, or does it favor the reverse reaction? Briefly justify your answer.
![Determination of the Equilibrium
Constant (Keg) for FeSCN2+
Fe*(aq) + SCN'(aq)
FESCN2+
[FESCN2]
Ke=
[ Fe**][SCN]
Procedure
1.
Obtain three small beakers and number them 1-3.
2.
Using burets, dispense into each test the following quantities of solutions.
Beaker
0.002M Fe³
3+
0.002 M SCN-
0.5M HNO3
1
5.0 mL
0.5 mL
4.5 mL
2
5.0 mL
2.0 mL
3.0 mL
3
5.0 mL
4.0 mL
1.0 mL
3.
With occasional mixing, let the beakers sit for 10 min.
4.
Measure the absorbance of each solution at 447nm.
5.
Using the provided calibration curve, determine the concentration of FeSCN²+ in
each of the three beakers.
6.
Based upon the equilibrium concentration of FeSCN²*, determine the equilibrium
constant (Keg) for each solution.
7.
Determine the average equilibrium constant for this reaction.
Data
Beaker
Absorbance
1
2
3](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1f6a3af1-7d9c-414f-b6ff-93014fc5701c%2Ff86b404e-5eac-4ad9-9617-86088c889f31%2Fr7o1i99_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Determination of the Equilibrium
Constant (Keg) for FeSCN2+
Fe*(aq) + SCN'(aq)
FESCN2+
[FESCN2]
Ke=
[ Fe**][SCN]
Procedure
1.
Obtain three small beakers and number them 1-3.
2.
Using burets, dispense into each test the following quantities of solutions.
Beaker
0.002M Fe³
3+
0.002 M SCN-
0.5M HNO3
1
5.0 mL
0.5 mL
4.5 mL
2
5.0 mL
2.0 mL
3.0 mL
3
5.0 mL
4.0 mL
1.0 mL
3.
With occasional mixing, let the beakers sit for 10 min.
4.
Measure the absorbance of each solution at 447nm.
5.
Using the provided calibration curve, determine the concentration of FeSCN²+ in
each of the three beakers.
6.
Based upon the equilibrium concentration of FeSCN²*, determine the equilibrium
constant (Keg) for each solution.
7.
Determine the average equilibrium constant for this reaction.
Data
Beaker
Absorbance
1
2
3
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY