chemical equilibrium
state in which both reactants and products are present in concentrations which have no further tendency to change with time.There are no net changes in the concentrations of the reactant(s) and product(s). Such a state is known as dynamic equilibrium
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Chemical equilibrium is when a chemical reaction reaches a state where the amounts of reactants and products stop changing over time, even though the reaction continues happening at the molecular level. It matters because understanding when reactions reach this balanced state helps chemists predict what substances will be present in a system and how much of each one there will be.
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Article
In a chemical reaction, chemical equilibrium is the state in which both the reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system. This state results when the forward reaction proceeds at the same rate as the reverse reaction. The reaction rates of the forward and backward reactions are generally not zero, but they are equal. Thus, there are no net changes in the concentrations of the reactants and products. Such a state is known as dynamic equilibrium. It is the subject of study of equilibrium chemistry.
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