Azeotropic mixtures
Aboil at constant composition like a pure compound
Bcan be separated by simple distillation (typical)
Calways show ideal Raoult behaviour
Dhave zero vapour pressure
Answer & Solution
Correct answer: A. boil at constant composition like a pure compound
1. At the azeotropic composition the liquid and vapour have the same composition.
2. Hence simple distillation cannot change the composition further.
3. They behave like a pure substance with a constant boiling point.
_Source: Maharashtra Balbharati Std XII Chemistry, Ch 2 "Solutions" §2.5_
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