When the concentration of solutes reaches equilibrium, it means that the concentration of solutes is the same throughout the system (option B).
Equilibrium of a system is the condition of a system in which competing influences are balanced and resulting in no net change.
In chemistry, an equilibrium state is said to be achieved when the rates of the forward and reverse reactions are the same.
Ideally, a solution is formed when a solute dissolves in a solvent. However, when the concentration of solutes reaches equilibrium, it is said that the solutes are even or equal throughout the system.
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