11.11. The potential (E) of the Co³+/Co²+ redox couple can be changed by adding the ligand iminodiacetic acid (H₂L). If you have two beakers with solutions containing this redox couple but only enough iminodiacetic acid to create a 10-3M solution in one beaker, to which beaker would you add the iminodiacetic acid to cause the largest change in E?

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...
icon
Related questions
Question

What specific information do you need?

Let me know in the comments.
11.11. The potential (E) of the Co³+/Co²+ redox couple can be changed by adding
the ligand iminodiacetic acid (H₂L). If you have two beakers with solutions
containing this redox couple but only enough iminodiacetic acid to create a
10-³M solution in one beaker, to which beaker would you add the iminodiacetic
acid to cause the largest change in E?
Beaker 1: Co(OH)3(s) and Co = 1 x 10-6 M at a pH of 4.5.
Beaker 2: Co = 1 x 10-6 M and Co = 1 x 10-6 M at a pH of 4.5
(no solid present)
You may assume that the Co" does not precipitate.
H₂L = H+ + HL™
Kal
=
10-9.8
HL=H+ + L²-
K₁2 = 10-12.6
Co³++eCo²+
=
Eº = 1.95V
Co³+ + H₂O = COOH²+ + H+
"B₁
Co³++ L² COL+
=
KICO(III) =
Co(OH)3() = Co³+ + 3OH-
Ks0= 10-355
Co²+ + H₂O=COOH+ + H+
"B1 = 10-9.697
Co²+
+ 2H₂O = Co(OH)2 + 2H+
B₂ = 10-18.794
Co²+ + 3H₂O = Co(OH)3 + 3H+
B3 = 10-31491
Co²+ +L² = Colº
K₁Co(II) = 107.8
= 10-1.291
1030.68
Transcribed Image Text:11.11. The potential (E) of the Co³+/Co²+ redox couple can be changed by adding the ligand iminodiacetic acid (H₂L). If you have two beakers with solutions containing this redox couple but only enough iminodiacetic acid to create a 10-³M solution in one beaker, to which beaker would you add the iminodiacetic acid to cause the largest change in E? Beaker 1: Co(OH)3(s) and Co = 1 x 10-6 M at a pH of 4.5. Beaker 2: Co = 1 x 10-6 M and Co = 1 x 10-6 M at a pH of 4.5 (no solid present) You may assume that the Co" does not precipitate. H₂L = H+ + HL™ Kal = 10-9.8 HL=H+ + L²- K₁2 = 10-12.6 Co³++eCo²+ = Eº = 1.95V Co³+ + H₂O = COOH²+ + H+ "B₁ Co³++ L² COL+ = KICO(III) = Co(OH)3() = Co³+ + 3OH- Ks0= 10-355 Co²+ + H₂O=COOH+ + H+ "B1 = 10-9.697 Co²+ + 2H₂O = Co(OH)2 + 2H+ B₂ = 10-18.794 Co²+ + 3H₂O = Co(OH)3 + 3H+ B3 = 10-31491 Co²+ +L² = Colº K₁Co(II) = 107.8 = 10-1.291 1030.68
Expert Solution
steps

Step by step

Solved in 5 steps

Blurred answer
Knowledge Booster
Redox Titrations
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.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY