Question

during osmosis, water moves down its own concentration gradient. how is it possible to reduce the concentration of a solvent? when more solutes are dissolved in solvents, the concentration of the solute increases, but per unit volume, the concentration of the solvent decreases. when solvents dissolve solutes, the solvent concentration increases. solvents are repelled by solutes and tend to move away from them. only solutes can change concentration; solvents never change.

Explanation:

Solvent concentration per unit volume decreases when more solutes are dissolved as solute - solvent ratio changes.

Answer:

When more solutes are dissolved in solvents, the concentration of the solute increases, but per unit volume, the concentration of the solvent decreases.