Answer:
A
Explanation:
1. Chemical equilibrium : is the chemical reversible reaction in which the rate of the forward reaction ( formation of product from reactants) is equals to the rate of the reverse reaction( converting products into reactants). When a reaction is in equilibrium, then the concentration of the reactants and products are constant.
2. Examples of chemical equilibrium : bottle of fizzy cool drink, and there are also many other examples of chemical equilibrium.