If pure ethanol has a boiling point of 78.3∘C and its azeotrope has a boiling point of 78.174∘C. What would be its graph look like?
A
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B
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C
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D
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Solution
The correct option is B Since the azeotrope BP < pure ethanol BP, the azeotrope is a positive azeotrope and would have a graph that looks like the above figure upside-down