Consider the Pourbaix digram below, at E = +0.4 V, when pH is adjusted from 4 to 8, which species of Fe is present? * Fe+ +0.8 O,H,0 +0.4 Fe2+ Fe(OH),(s) > H,O/H, -0.4 Fe(OH)s --0.8 2 4 8 10 12 14 pH O Fe* (aq) O Fe(OH),(s) Fe2 (aq) O Fe(OH),(s)

Consider the Pourbaix digram below, at E = +0.4 V, when pH is adjusted from 4 to 8, which species of Fe is present? * Fe+ +0.8 O,H,0 +0.4 Fe2+ Fe(OH),(s) > H,O/H, -0.4 Fe(OH)s --0.8 2 4 8 10 12 14 pH O Fe* (aq) O Fe(OH),(s) Fe2 (aq) O Fe(OH),(s)

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy

Section: Chapter Questions

Problem 44PS

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Question

Consider the Pourbaix digram below,
at E = +0.4 V, when pH is adjusted
from 4 to 8, which species of Fe is
present? *
Fe+
+0.8
O,H,0
+0.4
Fe2+
Fe(OH),(s)
>
H,O/H,
-0.4
Fe(OH)s
--0.8
2 4
8 10 12 14
pH
O Fe* (aq)
O Fe(OH),(s)
Fe2 (aq)
O Fe(OH),(s)

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