Mixtures which distill over without change in composition called___________________?
Correct answer: B. azeotropic mixture
- A. zeotropic mixture
- B. azeotropic mixture
- C. amphoteric mixture
- D. ideal solution
Explanation
An azeotropic mixture boils and distils at a constant composition because its vapour has the same composition as the liquid. Students may choose a zeotropic mixture, but zeotropic mixtures change composition during distillation.
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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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