Raoult’s law asserts that the equilibrium vapor pressure exerted by a component in solution is proportional to its mole fraction. This principle relies on the assumption that________________?
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Answer: D. All A., B. & C.
Explanation
Raoult's law assumes ideal solution behavior where molecular interactions remain uniform. Similar molecular sizes ensure that molecules substitute freely within the liquid mixture. Ideal solutions require identical intermolecular forces between like and unlike molecules. Vapor-liquid equilibrium calculations rely heavily on Raoult's law for ideal mixtures. Deviations from ideality occur when polar and non-polar compounds are mixed together. Thermodynamic activity coefficients correct for non-ideal behavior in real chemical solutions.
Distillation column design depends on accurate vapor pressure and liquid composition models. Chemical plants use thermodynamic models to predict phase behavior in multicomponent mixtures. Ideal solution assumptions simplify initial separation calculations for similar hydrocarbon blends. Option A only covers molecular sizing without addressing intermolecular forces. Option B focuses solely on forces without including molecular size requirements. Option C addresses chemical association but needs molecule size criteria for completeness.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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