A beaker contains two solutions of salt dissolved in water. The two solutions have different concentrations of salt (measured by molarity, M) and are separated by a membrane that is permeable to both salt and water. The salt and water will move through the membrane by diffusion.

Which statement is true about the diffusion of these solutions?

Both salt and water will move across the membrane due to osmosis and diffusion until their concentrations are equal. The water will move towards the side of higher salt concentration and vice versa.

Explanation:

In this scenario within the beaker, the principle of osmosis and diffusion applies. Osmosis is the movement of water through a semipermeable membrane according to the water's concentration gradient. Diffusion, on the other hand, allows the movement of solutes under their concentration gradient. Therefore, both salt (as solutes) and water will tend to equalize their concentrations on both sides of the membrane.

In this system, the side with a higher salt concentration has a lower water concentration. Hence, water will move towards the side with more salt, and salt will move towards the side with more water. This movement will continue until the gradient for both the water and salt reach equilibrium, meaning their concentrations are the same on both sides of the membrane. However, this assessment assumes the membrane is equally permeable for both the water and the salt, which might not be the case and could influence the final concentrations.

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