A Pourbaix diagram for iron in water – the primary application for our course is to read it like a phasediagram, what species are expected to dominate an aqueous solution under certain pH and pEconditions.20Fe1510 +5PEFe2+Fe(OH),-5-10H2Fe(OH)2-15 +0 1346.78910 11 12 13 14pHa. What label is misplaced on the diagram?b. Why is Fe?+ always below Fe* in the diagram? (This is more of a general chemistry-redoxquestion)c. What species dominates the aqueous solution at pH 8.0 and pE 0.0?d. Estimate by how much the pH can be lowered at pE = 0.0 before we expect to find Fe2+(ag) isthe dominant species according to the diagram.

Solution- The above diagram is the Eh-pH or pE-pH diagram for part of the Fe-O-H system assuming…

nditions. 20 Fe 15 10 + PE Fe Fe(OH), -5 -10 H2 Fe(OH); -15 0 1 2 3 9 10 11 12 13 14 4. 5. 8. pH a. What label is misplaced on the diagram? b. Why is Fe2* always below Fe* in the diagram? (This is more of a general chemistry-redox question) c. What species dominates the aqueous solution at pH S8.0 and pE 0.0? d. Estimate by how much the pH can be lowered at pE = 0.0 before we expect to find Fe2*(aq) i the dominant species according to the diagram.

nditions. 20 Fe 15 10 + PE Fe Fe(OH), -5 -10 H2 Fe(OH); -15 0 1 2 3 9 10 11 12 13 14 4. 5. 8. pH a. What label is misplaced on the diagram? b. Why is Fe2* always below Fe* in the diagram? (This is more of a general chemistry-redox question) c. What species dominates the aqueous solution at pH S8.0 and pE 0.0? d. Estimate by how much the pH can be lowered at pE = 0.0 before we expect to find Fe2*(aq) i the dominant species according to the diagram.

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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