Investigations into the common ion effect

C. V. Valdeavella, John S. Perkyns, Bernard Pettitt

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The molecular origins of the common ion effect and the salting out of nonpolar molecules from aqueous solutions are investigated. Thermodynamic stability criteria for a common ion mixture in a polar solvent are derived. Kirkwood-Buff statistical thermodynamics is used to make the connection with the microscopic pair correlation functions. The observed sensitivity of the compositional stability with respect to ionic strength indicates that a demixing transition is the primary cause of the instability for the common ion effect for our model Lennard-Jones plus Coulomb Hamiltonian.

Original languageEnglish (US)
Pages (from-to)5093-5109
Number of pages17
JournalThe Journal of Chemical Physics
Volume101
Issue number6
StatePublished - 1994
Externally publishedYes

Fingerprint

Ions
Hamiltonians
thermodynamics
ions
Statistical mechanics
Stability criteria
Ionic strength
Thermodynamic stability
aqueous solutions
Molecules
causes
sensitivity
molecules

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Valdeavella, C. V., Perkyns, J. S., & Pettitt, B. (1994). Investigations into the common ion effect. The Journal of Chemical Physics, 101(6), 5093-5109.

Investigations into the common ion effect. / Valdeavella, C. V.; Perkyns, John S.; Pettitt, Bernard.

In: The Journal of Chemical Physics, Vol. 101, No. 6, 1994, p. 5093-5109.

Research output: Contribution to journalArticle

Valdeavella, CV, Perkyns, JS & Pettitt, B 1994, 'Investigations into the common ion effect', The Journal of Chemical Physics, vol. 101, no. 6, pp. 5093-5109.
Valdeavella, C. V. ; Perkyns, John S. ; Pettitt, Bernard. / Investigations into the common ion effect. In: The Journal of Chemical Physics. 1994 ; Vol. 101, No. 6. pp. 5093-5109.
@article{13ae0e39bac6465e82e57359412b1bf2,
title = "Investigations into the common ion effect",
abstract = "The molecular origins of the common ion effect and the salting out of nonpolar molecules from aqueous solutions are investigated. Thermodynamic stability criteria for a common ion mixture in a polar solvent are derived. Kirkwood-Buff statistical thermodynamics is used to make the connection with the microscopic pair correlation functions. The observed sensitivity of the compositional stability with respect to ionic strength indicates that a demixing transition is the primary cause of the instability for the common ion effect for our model Lennard-Jones plus Coulomb Hamiltonian.",
author = "Valdeavella, {C. V.} and Perkyns, {John S.} and Bernard Pettitt",
year = "1994",
language = "English (US)",
volume = "101",
pages = "5093--5109",
journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics Publising LLC",
number = "6",

}

TY - JOUR

T1 - Investigations into the common ion effect

AU - Valdeavella, C. V.

AU - Perkyns, John S.

AU - Pettitt, Bernard

PY - 1994

Y1 - 1994

N2 - The molecular origins of the common ion effect and the salting out of nonpolar molecules from aqueous solutions are investigated. Thermodynamic stability criteria for a common ion mixture in a polar solvent are derived. Kirkwood-Buff statistical thermodynamics is used to make the connection with the microscopic pair correlation functions. The observed sensitivity of the compositional stability with respect to ionic strength indicates that a demixing transition is the primary cause of the instability for the common ion effect for our model Lennard-Jones plus Coulomb Hamiltonian.

AB - The molecular origins of the common ion effect and the salting out of nonpolar molecules from aqueous solutions are investigated. Thermodynamic stability criteria for a common ion mixture in a polar solvent are derived. Kirkwood-Buff statistical thermodynamics is used to make the connection with the microscopic pair correlation functions. The observed sensitivity of the compositional stability with respect to ionic strength indicates that a demixing transition is the primary cause of the instability for the common ion effect for our model Lennard-Jones plus Coulomb Hamiltonian.

UR - http://www.scopus.com/inward/record.url?scp=36449002126&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36449002126&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:36449002126

VL - 101

SP - 5093

EP - 5109

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 6

ER -