principle of microscopic reversibility 

https://doi.org/10.1351/goldbook.P04850
In a reversible reaction, the mechanism in one direction is exactly the reverse of the mechanism in the other direction. This does not apply to reactions that begin with a photochemical excitation.
See also: chemical reaction, detailed balancing
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1141 [Terms] [Paper]
Citation: 'principle of microscopic reversibility' 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.P04850 RIS BibTex EndNote
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Last revised: February 24, 2014