where [N2O5] is the molar concentration of N2O5 at any instant. This equation is
an example of a rate law, an expression for the instantaneous reaction rate in terms
of the concentration of a species at any instant. Each reaction has its own characteristic
rate law and rate constant k that is independent of the concentrations of
the reactants (TABLE 15.1).
Other reactions have rate laws that may depend differently on concentration.
Similar measurements on the reaction