In thermodynamics, **Gibbs energy of repulsion**, *Gr* is the measurement of the energy (or free energy?) associated with a repulsive force that exists or operates between two molecular objects, surfaces, or structures. In formulaic terms, Gibbs energy of repulsion is defined as follows: [1]

where* li *is an initial length or distance of separation,* lf *is a final length or distance of separation, *Fr* is the repulsive force, *dl *is differential of length, and the where the conditional subscripts *T* and *P* signify an isothermal-isobaric process.

References

1. (a) Thims, Libb. (2007). *Human Chemistry (Volume One). *Morrisville, NC: LuLu.

(b) Attraction and Repulsion (Wayback)– IUPAC Reports, 2001.