Consider a zero order reaction,
A → Products
The rate of the reaction is,
By rate law,
Rate = k x [A]0 = k
∴ – d[A] = k x dt
If [A]0 is the initial concentration of the reactant A at t = 0 and [A]t is the concentration of A present after time t, then by integrating above equation,
This is the integrated rate law expression for rate constant for zero order reaction.
∴ k x t = [A]0 – [A]t
∴ [A]t = – kt + A0
