Dissolving a solute into a pure solvent results in a reduction of the ______________ of the resulting solution ?
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Answer: D. Both B. and C.
Explanation
Dissolving a non-volatile solute into a pure solvent lowers its chemical potential, leading directly to colligative property changes. The presence of solute particles hinders solvent molecules from escaping into the vapor phase, reducing vapor pressure. This vapor pressure depression simultaneously causes freezing point depression and boiling point elevation in the solution. Colligative properties depend solely on the concentration of dissolved solute particles rather than their chemical identity. Raoult's law quantifies vapor pressure lowering as being proportional to the mole fraction of the dissolved solute. Freezing point depression occurs because solute molecules disrupt the formation of the ordered solid solvent crystal lattice.
Option A is incorrect because dissolving a non-volatile solute actually elevates the boiling point, not reduces it. Option B is correct individually, but option C is also correct, making option D the comprehensive answer. Option C is correct individually, but option B is also correct, making option D the comprehensive answer.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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