A binary liquid Azeotropic mixture has boiling point lower than either of the components, when it shows _____________ deviation from Raoult's Law?
Correct answer: C. Positive
- A. No
- B. Negative
- C. Positive
- D. None of these
Explanation
Positive deviation raises the total vapour pressure above Raoult's-law prediction, so the mixture boils at a lower temperature than either pure component and may form a minimum-boiling azeotrope. Negative deviation produces the opposite, maximum-boiling behaviour.
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