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Ion-Solvent Interactions According to the Born Model

The Born model [11] provides a means of estimating the Gibbs energy of solvation for an ion in an infinitely dilute solution. It is based on a continuum description of the solvent as a uniform dielectric with a relative permittivity of The work of transferring the ion from vacuum to the dielectric medium is estimated on the basis of the following three-step process (a) the ion is reversibly discharged in vacuum (b) the discharged ion, which is assumed to be a sphere of radius, r, is [Pg.102]

The total work associated with the above three-step process for solvation can be written [Pg.104]

Assuming that Wb, the work associated with introducing the uncharged sphere into the dielectric liquid, is zero, then [Pg.104]

Having obtained the Gibbs energy of solvation, one may now determine the other thermodynamic parameters. The entropy is obtained from the temperature derivative of A Ci  [Pg.104]

The Gibbs energy and entropy may now be combined to obtain an expression for the enthalpy of solvation  [Pg.105]


See other pages where Ion-Solvent Interactions According to the Born Model is mentioned: [Pg.102]   


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