First Order Kinetics Definition
An order of chemical reaction in which the rate of the reaction is proportional to the amount of one reactant and is determined by its concentration.
It can be expressed using the formula
rate = kA
where k is the reaction rate constant and A is the reactant concentration.
The breakdown of N2O5 is an example of a first-order reaction:
N2O5 → 2NO2 + 12O2
The rate of reaction is proportional to the N2O5 concentration raised to the first power.
First Order Kinetics Citations