A Theory of Surface Tension of Debye-Hückel Electrolyte

Density fluctuations in an electrolyte from generalized Debye-Hückel theory.

Near-critical thermodynamics in the hard-sphere (1, 1) electrolyte is well described, at a classical level, by Debye-Hückel (DH) theory with s1, 2d ion pairing and dipolar-pair-ionic-fluid coupling. But DH-based theories do not address density fluctuations. Here density correlations are obtained by functional differentiation of DH theory generalized to nonuniform densities of various species. T...

A molecular Debye-Hückel theory and its applications to electrolyte solutions: The size asymmetric case.

A molecular Debye-Hückel theory for electrolyte solutions with size asymmetry is developed, where the dielectric response of an electrolyte solution is described by a linear combination of Debye-Hückel-like response modes. As the size asymmetry of an electrolyte solution leads to a charge imbalanced border zone around a solute, the dielectric response to the solute is characterized by two types...

Prediction of Surface Tension in Single and Mixed Electrolyte Solutions

OFFPRINT Surface tension of electrolyte solutions: A self-consistent theory

We study the surface tension of electrolyte solutions at the air/water and oil/water interfaces. Employing field-theoretical methods and considering short-range interactions of anions with the surface, we expand the Helmholtz free energy to first order in a loop expansion and calculate the excess surface tension. Our approach is self-consistent and yields an analytical prediction that reunites ...

Surface Tension of a Metal-Electrolyte Boundary: Exactly Solvable Model

An ideal conductor electrode in contact with a semi-infinite two-dimensional twocomponent plasma in an external potential is considered. The model is mapped onto an integrable sine-Gordon theory with Dirichlet boundary conditions. The information gained from the mapping provides an explicit form of the surface tension in the plasma-stability regime.