Description

An isomorphic force, Δ_trF (intensive quantity), in thermodynamics or ergodynamics is the partial Gibbs (Helmholtz) energy change per advancement of a transformation (tr).

Abbreviation: Δ_trF

Reference: Gnaiger_1993_PAC

MitoPedia concepts: MiP concept

Gibbs energy or Gibbs force?

Gnaiger E (2018) Gibbs energy or Gibbs force? Mitochondr Physiol Network 2018-08-02.

Gnaiger E (2018) MiPNet

Abstract: Gibbs energy, G [J], is an extensive quantity, defined relative to a reference state of a system, comparable to altitude [m] defined relative to a reference (altitude at sea level). When a chemical reaction proceeds in a closed isothermal system, the Gibbs energy of the system undergoes a change, d_rG, [J]. Force is an intensive quantity. An isomorphic force is defined as the partial derivative of Gibbs energy (exergy) per advancement of a transformation, Δ_trF = d_trG/d_trξ. The driving force of a reaction (compare affinity), therefore, is Δ_rF = d_rG/d_rξ [J·mol^-1].

• O2k-Network Lab: AT Innsbruck Gnaiger E

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HRR: Theory