Question

Using the idea of a concentration

gradient, explain why the blue
colour gradually spreads throughout
the water in the jar. When does
diffusion stop?

Answer 1

Step-by-step explanation:

Osmosis. Osmosis is the diffusion of water through a semipermeable membrane down its concentration gradient. If a membrane is permeable to water, though not to a solute, water will equalize its own concentration by diffusing to the side of lower water concentration (and thus the side of higher solute concentration).