Draw and discuss in with a concentration of 106 M. aix plor Ni + H₂O = Ni(OH)₂ + 2H+ + 2e™ 3Ni(OH)₂ + H₂O = Ni3O4 + 2H+ + 2e™ 2Ni3O4 + H₂O = 3Ni₂O3 + 2H+ + 2e¯ Ni₂O3 + H₂O = 2NiO₂ + 2H+ + 2e¯ Ni²+ + H₂O = Ni(OH)₂ + 2H+ Ni(OH)₂ + H₂O = HNiO₂ + H+ Ni = Ni²+ + 2e Ni + 2H₂O = HNiO₂ + 3H+ + 2e 3Ni²+ + 4H₂O = Ni3O4 + 8H+ + 2e¯ 3HNIO₂ + H+ = Ni3O4 + 2H₂O + 2e™ 2Ni2+ + 3H₂O = Ni₂O3 + 6H+ + 2e¯ Ni²+ + 2H₂O = NiO₂ + 4H+ + 2e™

Fundamentals Of Analytical Chemistry
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Chapter15: Complex Acid/base Systems
Section: Chapter Questions
Problem 15.3QAP
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Draw and discuss in details the Pourbaix plot representing the following reactions
with a concentration of 10-6 M.
Ni + H₂O = Ni(OH)₂ + 2H+ + 2e™
3Ni(OH)₂ + H₂O = Ni3O4 + 2H+ + 2e™
2Ni3O4 + H₂O = 3Ni₂O3 + 2H+ + 2e¯
Ni₂O3 + H₂O = 2NiO₂ + 2H+ + 2e¯
Ni²+ + H₂O = Ni(OH)₂ + 2H+
Ni(OH)₂ + H₂O = HNiO₂ + H+
Ni = Ni²+ + 2e™
Ni + 2H₂O = HNiO₂ + 3H* +2e™
3Ni²+ + 4H₂O = Ni3O4 + 8H+ + 2e¯
3HNiO₂ + H = Ni3O4 + 2H₂O + 2e™
2Ni²+ + 3H₂O = Ni₂O3 + 6H+ + 2e™
Ni²+ + 2H₂O = NiO₂ + 4H+ + 2e™
Transcribed Image Text:Draw and discuss in details the Pourbaix plot representing the following reactions with a concentration of 10-6 M. Ni + H₂O = Ni(OH)₂ + 2H+ + 2e™ 3Ni(OH)₂ + H₂O = Ni3O4 + 2H+ + 2e™ 2Ni3O4 + H₂O = 3Ni₂O3 + 2H+ + 2e¯ Ni₂O3 + H₂O = 2NiO₂ + 2H+ + 2e¯ Ni²+ + H₂O = Ni(OH)₂ + 2H+ Ni(OH)₂ + H₂O = HNiO₂ + H+ Ni = Ni²+ + 2e™ Ni + 2H₂O = HNiO₂ + 3H* +2e™ 3Ni²+ + 4H₂O = Ni3O4 + 8H+ + 2e¯ 3HNiO₂ + H = Ni3O4 + 2H₂O + 2e™ 2Ni²+ + 3H₂O = Ni₂O3 + 6H+ + 2e™ Ni²+ + 2H₂O = NiO₂ + 4H+ + 2e™
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