Chemical Forums
Chemistry Forums for Students => High School Chemistry Forum => Topic started by: bjartmaregill on November 25, 2014, 08:24:30 AM
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Hello.
I'm trying to understand electric potential and Pourbaix diagrams.
I found this table in: "Corrosion Handbook: Principles and practice".
(https://dl-web.dropbox.com/get/imgshare/Ered.png?_subject_uid=46461683&w=AAA2QsRbHNu3iApLpCNwq1xu2g1LCKCBe-ru6aHSJvkVpg)
https://www.dropbox.com/s/x3j9fqshhktvkak/Ered.png?dl=0
And this Pourbaix diagrams in "Atlas of Eh-pH diagrams"
(https://dl-web.dropbox.com/get/imgshare/pourbaix.png?_subject_uid=46461683&w=AACxGazKQvkEzJedM0IF5FQwu3IhbUOAcmN2yvVI7s2jGw)
https://www.dropbox.com/s/pl0owygjsaulxkl/pourbaix.png?dl=0
Can anyone help me understand how to use the diagram? And how I can predict in what environment the metals will corrode? I know the dashed-line is water and the bold text indicates it is solid.
On the Y-axis... Is that the environments "SHE" potential?