6&16 Kinetics Flashcards
Activation energy =
the minimum energy that colliding molecules need in order to have successful collisions leading to a reaction.
Catalyst =
a substance that increases the rate of reaction by providing an alternative reaction pathway without being used up itself.
Rate of reaction =
the measure of the change in concentration of the reactants or the change in concentration of the products per unit time.
Rate determining step =
the slowest step in a reaction that has multiple stages.
The molecularity of an elementary step =
the number of reactant particles taking part in that step.
Rate equation or rate expression =
an experimentally determined equation that relates rate of reaction to the concentrations of substance in the reaction mixture.
Rate constant (k) =.
a constant of proportionality relating the concentrations in the experimentally determined rate equation to the rate of a chemical reaction. It is only valid at a constant temperature
Overall order of reaction =
sum of the orders of reaction with respect to each reactant.
