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.
As an example of a slow first step determining the rate law of a reaction, consider the reaction of NO2 and CO to produce NO and CO2 (Equation 14.24). Below 225Â°C it is found experimentally that the rate law is second order in NO2 and zero order in CO: Rate = k[NO2]2.