Final answer:
The rates of forward and reverse reactions are not equal immediately after a disturbance in a system in equilibrium; the system adjusts according to Le Châtelier's principle to re-establish equilibrium.
Step-by-step explanation:
No, the rates of the forward and reverse reactions are not still equal immediately after a disturbance is introduced to a system in equilibrium. At equilibrium, these rates are equal, meaning that the system is in a state of dynamic balance. However, when a disturbance occurs, such as the addition or removal of a reactant or product, or a change in temperature or pressure, the rates of the reactions change until a new equilibrium is established. This process is defined by Le Châtelier's principle, which states that if an equilibrium system is stressed, it will adjust to minimize the effect of the disturbance and re-establish equilibrium.