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Positive deviation from Raoult’s law results in?

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Positive deviation from Raoult’s law results in?

(a) Minimum boiling azeotrope

(b) Maximum boiling azeotrope

(c) Tangential azeotrope

(d) Elliptical azeotrope

The question was posed to me in an internship interview.

My question is from Azeotropic Elements in portion Azeotropic and Extractive Distillation of Distillation Design

1 Answer

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Correct answer is (a) Minimum boiling azeotrope

Easy explanation: The attraction between identical molecules (A-A and B-B) is stronger than between different molecules (A-B), This may cause the formation of a minimum-boiling azeotrope and heterogeneity.

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