44. Aluminum (E° Al3+/Al = -2.07 V) is more easily oxidized than iron (E3+ = -0.477 V), and yet when /Fe Fe both are exposed to the environment, untreated aluminum has very good corrosion resistance while the corrosion resistance of untreated iron is poor. Explain this observation.

44. Aluminum (E° Al3+/Al = -2.07 V) is more easily oxidized than iron (E3+ = -0.477 V), and yet when /Fe Fe both are exposed to the environment, untreated aluminum has very good corrosion resistance while the corrosion resistance of untreated iron is poor. Explain this observation.

Chemistry by OpenStax (2015-05-04)

1st Edition

ISBN:9781938168390

Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Chapter17: Electrochemistry

Section: Chapter Questions

Problem 44E: Aluminum (E Al 3+/Al=2.07V) is more easily oxidized than iron (E Fe 3+/Fe=2.07V), and yet when both...

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Question

44. Aluminum (E°
Al3+/Al
= -2.07 V) is more easily oxidized than iron (E3+
= -0.477 V), and yet when
/Fe
Fe
both are exposed to the environment, untreated aluminum has very good corrosion resistance while the corrosion
resistance of untreated iron is poor. Explain this observation.

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