By molecules moving around randomly until they are spaced equidistantly apart.
When there's no net gain in and out of the cell as particles follow their concentration gradient until they reach a balance, equilibrium is met.
This occurs when the number of solute particles entering a ZONE is the same as the number of particles leaving the area.
When there is continuous movement but no change
State of equilibrium means that there is a balance of forces summing to zero, or no acceleration. If there are no forces, there will be no acceleration or change of velocity. Velocity can be...
The state of the equilibrium is where there is no change.