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Nernst equation

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310011
EISBN: 978-1-62708-286-0
... theory as it pertains to corrosion resistance of stainless steels. The discussion provides an overview of electrochemical reactions, Faraday's law, the Nernst equation, galvanic versus electrochemical cells, corrosion tendency, and Pourbaix diagrams. corrosion stainless steel corrosion prevention...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940087
EISBN: 978-1-62708-302-7
... defined by the relationship: (Eq 3.1) η = E ( i ) − E ′ where E(i) is the potential represented as a function of current density, i, and E′ is the equilibrium half-cell potential, which would exist with no current and can be calculated from the Nernst half-cell equation. In 1905, Tafel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910049
EISBN: 978-1-62708-250-1
... active and will corrode. Understanding the effect of ion concentration on electrode potential is facilitated by reference to the reaction Fe 2+ + 2 e − → Fe, which shows that ferrous ions (Fe 2+ ) plus two electrons (2 e − ) can be reduced to metallic iron (Fe). The Nernst equation, which is...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940023
EISBN: 978-1-62708-302-7
... equation based on Eq 2.20 is equivalent to Eq 2.23 : (Eq 2.24) Δ G   react o = 3 2 Δ G f Fe 2 O 3 o + 1 2 Δ G f H 2 o − ( Δ G f Fe 3 O 4 o + 1 2 Δ G f...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310019
EISBN: 978-1-62708-286-0
... − and (Eq 4) 2 Fe ( s ) → 2 Fe 2 + + 4 e − The Nernst equation predicts an open circuit potential of, E rxn = E O 2 /OH - – E Fe 2+ /Fe where E O 2 / OH − = E O 2 / OH − 0 − R T 4 F ⁢ l...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.9781627082501
EISBN: 978-1-62708-250-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.9781627082822
EISBN: 978-1-62708-282-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940127
EISBN: 978-1-62708-302-7
... – E′ M calculated by application of the Nernst equation) and the polarization behaviors of the anodic and cathodic reactions. The current distribution parameters are the relative geometries of the anodic and cathodic areas, the specific resistivity of the solution and any other resistances to current...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940233
EISBN: 978-1-62708-302-7
... potentials, relative to the standard hydrogen electrode, of several half cells used as reference electrodes are given in Table 6.1 (the section “Examples of Half-Cell Reactions and Nernst-Equation Calculations” in Chapter 2 provides discussions of half-cell-potential calculations). There are a number of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420041
EISBN: 978-1-62708-310-2
... processes taking place in a system in equilibrium with its surroundings, the change in entropy is defined as: (Eq 3.3) d S ≡ δ Q T ≡ d E + P d V T A principle advanced by Theodore Richards, Walter Nernst, Max Planck, and others, often called the Third Law of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940271
EISBN: 978-1-62708-302-7