Interpretation: The temperature-composition diagram of a mixture of octane and methylbenzene for the given data has to be drawn. The composition of vapor in equilibrium with the liquid of composition (i)
Concept introduction: The azeotropic mixture is defined as a mixture of two or more liquids which evaporates without altering the composition of the mixture. The azeotropic mixture has a constant boiling point because of the same composition in liquid as well as vapor phase. The components of azeotropic mixture are not separated by distillation processes.
The temperature-composition diagram represents the changes in the mixture on changing the temperature of the mixture.
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