A liquid solvent is in equilibrium with its vapour. When a non-volatile solute is added to this liqu — Solutions and Colligative Properties Chemistry Question
Question
A liquid solvent is in equilibrium with its vapour. When a non-volatile solute is added to this liquid, the instant effect is the rate at which the solvent molecules leaves the
Answer: D
💡 Solution & Explanation
The addition of a non-volatile solute decreases the proportion of solvent molecules at the liquid surface. This immediately reduces the escaping tendency of the solvent, meaning the rate at which solvent molecules leave the solution (evaporate) decreases. Therefore, correct answer is D.
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