Chemical Relaxation

Chemical Relaxation:

 If the equilibrium mixture of a CHEMICAL REACTION is disturbed by a sudden change, especially of some external parameter (such as temperature, pressure, or electrical field strength), the system will readjust itself to a new position of the chemical equilibrium or return to the original position, if the
perturbation is temporary. The readjustment is known as chemical relaxation.
In many cases, and in particular when the displacement
from equilibrium is slight, the progress of the system toward equilibrium can be expressed as a first-order law
[Ct–(Ceq)2] = [(Ceq)1–(Ceq)2]e–t/τ