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    Iron concentration given pH and pE values

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    At pH 6.00 and pE 2.90, what is the concentration of Fe2+ (mol/L) in equilibrium with Fe(OH)3?

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    Solution Preview

    Actually looks like this idea is relatively new in the discussion of a pE which is a gauge of a systems oxidizing or reducing potential pE = - log (activity of the electrons) if the activity is 1 PE is zero and Ecell is Eo

    The Nernst equation is shown on page 10 of this reference.

    Finally, we have the form pE=pEo -1/n log {[RED]/[OX]}

    where pE = E/0.0592 and pEo= Eo/0.059

    So we are interested in ...

    Solution Summary

    This solution is provided in 354 words. It references Nernst equations to solve the problem and provides a reference to further learning.