Question

Why is chemical equilibrium dynamic?

Answer 1

Chemical equilibrium is the condition of a chemical process in which both the reactants and products are present in concentrations that have no further tendency to vary with time, resulting in no visible change in the system's characteristics. When the forward reaction and the reverse reaction both proceed at the same pace, this condition occurs.

Complete answer:
The forward and backward response rates are usually not zero, although they are roughly equal. As a result, there are no net changes in the reactant and product concentrations. Dynamic equilibrium is the term for such a situation.
If the reaction is exothermic or endothermic, it will affect the solubility of the products / reactants, as well as the equilibrium constant. Because more products or reactants may exist in solution at various temperatures, this is the case.
The equilibrium will be shifted one way or the other if there is a very high concentration of either a product or a reactant. This is due to the fact that adding reactants or products will always result in a reaction, unless the reaction can no longer dissolve any more of them. In that scenario, it transforms into a precipitate that has no influence on equilibrium.
Gaseous products and reactants are affected. If the pressure is lowered, the equilibrium will move to the side where there is more gas, because more can now fit. The same goes for the other way around.
There are several reasons that might cause equilibrium ( ${{K}_{c}}$ ) to alter, therefore we must constantly be aware of these aspects before assuming what the equilibrium is, since it is highly dynamic!
Once a reversible reaction happens, a dynamic equilibrium exists. There is no net change since substances transition at the same rate between reactants and products. The pace at which reactants and products are produced is such that neither of their concentrations changes. It is an example of a system that is in a steady state.

Note:
When reactions occur at such rates that the composition of the mixture does not vary with time, a closed system is said to be in thermodynamic equilibrium. Reactions can happen, sometimes violently, but rarely to the point where changes in composition may be seen. The rate constants for reversible reactions can be used to express equilibrium constants.