Question

What is the boiling point of azeotrope of a non ideal solution showing positive deviations as conpared to the boiling point of its component?

Answer 1

Indeed, 78.2 °C is the minimum temperature at which any ethanol/water solution can boil at atmospheric pressure. In general, a positive azeotrope boils at a lower temperature than any other ratio of its constituents. Positive azeotropes are also called minimum boiling mixtures or pressure maximum azeotropes.