" /> electrocapillary equation - CISMeF





Preferred Label : electrocapillary equation;

IUPAC definition : A form of the Gibbs adsorption equation which includes an expression of the phenomenon of electrocapillarity: \[s\ \mathrm{d}T- \tau \ \mathrm{d}p \mathrm{d}γ σ {\alpha }\ \mathrm{d}E \sum \mathit{γ }_{j}\ \mathrm{d}μ _{j} 0\] where s is the surface excess of entropy of unit area of interphase, T is the temperature, τ is the thickness or excess volume of unit area of the interphase, p is the external pressure, γ is the interfacial tension, σ α is the free surface charge density on phase α (areal amount of charge on the surface of phase α), E is the generalized potential, Γ j is the surface excess, µ j is the chemical potential and j is an electrically neutral component of one or other of the phases; the sum is over all the components but one in each phase.;

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A form of the Gibbs adsorption equation which includes an expression of the phenomenon of electrocapillarity: \[s\ \mathrm{d}T- \tau \ \mathrm{d}p \mathrm{d}γ σ {\alpha }\ \mathrm{d}E \sum \mathit{γ }_{j}\ \mathrm{d}μ _{j} 0\] where s is the surface excess of entropy of unit area of interphase, T is the temperature, τ is the thickness or excess volume of unit area of the interphase, p is the external pressure, γ is the interfacial tension, σ α is the free surface charge density on phase α (areal amount of charge on the surface of phase α), E is the generalized potential, Γ j is the surface excess, µ j is the chemical potential and j is an electrically neutral component of one or other of the phases; the sum is over all the components but one in each phase.

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29/07/2025


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