In the process of diffusion, when sugar is mixed with water, equilibrium would be reached

the dissolved sugar molecules are evenly distributed throughout the solution.

The dissolved sugar molecules is distributed evenly all over the solution.

The equilibrium is reached through diffusion. Diffusion is the net movement of molecules and atoms from a high concentration to area of lower concentration. This is considered as the result of the movement of molecules. Diffusion is driven by a gradient until the molecules are distributed randomly and uniformly all throughout the solution. This can be manifested by perfume sprayed in the air, dye dropped in a water. The distinguishing features of diffusion is that particle move randomly and in uniform pattern.