https://doi.org/10.1351/goldbook.T06442
A term used to quantify the difference in the free energy of a solute ion in two different standard states often in two different liquid phases. The relationship is \(\Delta _{\rm{t}}G^{\,\unicode{x26ac}} = \nu \ R\ T\ \ln \mathit{\gamma}_{\rm{t}}\) where \(\Delta _{\rm{t}}G^{\,\unicode{x26ac}}\) is the transfer Gibbs energy and \(\nu \) is the number of ions in the solute.
Notes:
- It should not be confused with the mass transfer coefficient which represents the specific rate of transfer of a species from one phase to another.
- It does not necessarily imply the physical transfer of a solute between two liquid phases.
See also: partition constant