Bell–Evans–Polanyi principle

https://doi.org/10.1351/goldbook.B00628
The linear relation between
energy of activation
(Ea) and
enthalpy
of reaction (ΔHr) sometimes observed within a series of closely related reactions. Ea=A+B ΔHr
Source:
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1088 [Terms] [Paper]