Term: isoequilibrium relationship
https://doi.org/10.1351/goldbook.I03280

Definition:
A relationship analogous to the isokinetic relationship but applied to equilibrium data. The equation defining the isoequilibrium temperature β is: \[\Delta _{\text{r}}H - \beta\ \Delta _{\text{r}}S = \text{constant}\] where ΔH and ΔS are enthalpy and entropy of reaction, respectively.

Related Terms:
1) isokinetic relationship (http://doi.org/10.1351/goldbook.I03285).
2) enthalpy (http://doi.org/10.1351/goldbook.E02141).
3) entropy (http://doi.org/10.1351/goldbook.E02149).

Source: PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1128 (https://doi.org/10.1351/pac199466051077)

Citation: 'isoequilibrium relationship' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.I03280

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