Its constant can be found with an equation that takes an exponential of negative activation energy divided by RT, the Arrhenius equation.
The RRK theory allows one to calculate this quantity for one type of interaction. The Br?nsted-Bjerrum equation corrects the constant involved in this quantity for a particular effect. It's not equilibrium, but the log of the ratio of its constants is found in the Hammett equation.  Primary isotope effects and the salt effect alter this quantity. Its constant can be found with an equation that takes an exponential of negative activation energy divided by RT, the Arrhenius equation. The order of a component is the exponent to which its component is raised in the laws named for this quantity, which can be increased by a catalyst.  For 10 points, name this measure of the speed of a reaction.
The RRK theory allows one to calculate this quantity for one type of interaction.
reaction rate [or rate constant; or rate law before mentioned]