Question

effect of solute concentration on diffusion rate in a semisolid
in a semi - solid, if the concentration of the solute is increased,
multiple choice
the rate of diffusion increases.
the rate of diffusion decreases.
the rate of diffusion increases, then stops at a certain concentration.
the rate of diffusion stops.
the rate of diffusion decreases, then stops at a certain concentration.

Explanation:

Diffusion is the movement of solute from an area of high - concentration to an area of low - concentration. A higher solute concentration creates a steeper concentration gradient initially, which increases the driving force for diffusion. But as the solute spreads and the concentration gradient becomes less steep, the rate of diffusion slows down and eventually stops when equilibrium is reached.

Answer:

the rate of diffusion increases, then stops at a certain concentration.