
Interpretation: On the given phase diagram the feature that denotes incongruent melting has to be stated. The composition of the eutectic mixture and the temperature at which it melts has to be stated.
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 phase diagram represents the changes in the mixture on changing the parameters like temperature and pressure of the mixture.

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Chapter 5 Solutions
Student Solutions Manual to accompany Atkins' Physical Chemistry 11th edition
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