Assorted References. 1  major reference (in celestial mechanics: Keplerâs laws of planetary motion) 2  astronomy (in physical science: Astronomy) (in astronomy: Kepler) 3  celestial mechanics (in mechanics: History) 4  discovery and formulation (in Johannes Kepler (German astronomer)) 5  geometry (in geometry: Pythagorean numbers and Platonic solids)
From Wikipedia, the free encyclopedia. In chemical kinetics, the overall rate of a reaction is often approximately determined by the slowest step, known as the rate determining step (RDS) or rate-limiting step.
The overall rate is determined by the second step, r = r 2 1, as very few molecules which react by the first step continue to the second step which is much slower. However this hypothesis can be rejected (for the example reaction) since it implies a rate equation which disagrees with experiment.