Linked from
The 35 pages that link to Reaction mechanism, each with the reason it gives.
Chemical equilibriumRelated: A mechanism can explain how forward and reverse reaction rates arise.
Chemical kineticsRelated: Kinetic evidence helps distinguish proposed sequences of elementary steps.
RegioselectivityRelated: Mechanisms connect molecular structure to the observed product ratio.
CatalystRelated: A catalyst changes the available sequence of elementary steps.