Electrode electrons, aqueous electrons, and redox potentials in natural waters

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ID: 294748
1984
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Abstract
The relation between Eh and electron activity a ~3~ -commonly found in the literature, namely FEh/2.303RT = pe = -log a ~e~ -, is deficient in that the physicochemical state of the electron is not specified. Relations between Eh and a ~e~ - (sub (SE)) (the activity of Pt sample electrode electrons) and also between Eh and a ~e~ - (sub (aq)) (the activity of aqueous electrons in the sample solution) are derived from a detailed consideration of chemical and electrochemical equilibria in the measurement cell. These relations show that pe ~SE~ = -log a ~e~ - ~SE~) congruent to O independent of FEh/2.303RT, and that pe ~aq~ = log a ~e~ - (sub (aq)) = (FEh/2.303RT) + 48.6. It is concluded that FEh/2.303RT, pe ~SE~ , and pe ~aq~ are three distinctly different parameters and that for practical purposes aqueous electrons do not exist in natural waters.\--Modified journal abstract.
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openalex_W2321434824 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors John D. Hostettler
Journal american journal of science
Year 1984
DOI
10.2475/ajs.284.6.734
URL
https://ajs.scholasticahq.com/article/60317.pdf
Keywords Keywords not found

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