substituutiovauhtia
Substituutiovauhtia is a Finnish technical term that translates literally to “substitution velocity.” It is used primarily in the physical chemistry and materials science literature to describe the instantaneous rate at which one species in a chemical system is replaced by another. The concept is closely related to substitution kinetics and is often invoked when discussing mechanistic pathways of nucleophilic substitutions, radical processes, or catalyst‑mediated transformations. In electrochemical contexts, substituutiovauhtia can also refer to the rate at which reactants at an electrode surface are replaced by products during a redox process.
The term was introduced in the early 1970s by a group of Finnish researchers working on polymer
Mathematically, substituutiovauhtia is expressed as the first‑order derivative of the concentration of the substituting species with
Because of its specificity, substituutiovauhtia is typically found in specialized research papers and technical reports rather