Question

Write down the differences between diffusion and osmosis.

Answer 1

Diffusion :

1. Diffusion can occur in any medium.

2. The diffusing molecules may be solids, liquids or gases.

3. Semipermeable membrane is not required.

4. An equilibrium in the free energy of diffusion molecules is achieved in the system.

Osmosis :

1. It occurs only in liquid medium.

2. It involves movement of solvent molecules only.

3. Semipermeable membrane is required.

4. Equilibrium in the free energy of solvent molecules is never achieved.