Two open beakers one containing a solvent and the other containing a mixture of that solvent with a non volatile solute are together sealed in a container. Over time:

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Canvas Classes · Accepted Answer

Strategy:
 Solvent always moves toward the region of lower vapour pressure. According to Raoult's Law, a solution has a lower vapour pressure than a pure solvent.

Mechanism:
1. At equilibrium within the sealed container, there is a common vapour phase.
2. The pure solvent has a higher vapour pressure () compared to the solution ().
3. Solvent evaporates from the beaker of pure solvent to maintain its higher saturation pressure.
4. However, this same vapour is "over-saturated" relative to the so

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