The solution which distils over with change in composition________________?
Correct answer: B. zeotropic solution
- A. ideal solution
- B. zeotropic solution
- C. azeotropic solution
- D. non-ideal solution
Explanation
A zeotropic mixture changes composition during distillation because its vapour and liquid phases have different compositions. The likely wrong choice is azeotropic solution, which distils at a constant composition and behaves like a constant-boiling mixture.
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About Evaporation, Boiling Point and Vapour Pressure
Evaporation is the escape of higher-energy molecules from a liquid surface, while vapour pressure is the pressure exerted by vapour in equilibrium with that liquid. The topic distinguishes evaporation from boiling and relates both to temperature, intermolecular forces, surface area, atmospheric pressure and the boiling point.
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