effective molarity (effective concentration)

https://doi.org/10.1351/goldbook.E01896
The ratio of the first-order @[email protected] of an @[email protected] reaction involving two functional groups within the same @[email protected] to the second-order @[email protected] of an analogous @[email protected] @[email protected] This ratio has the dimension of concentration. The term can also apply to an @[email protected]