Some liquids on mixing from 'azeotropes'. What are 'azeotropes'?

Explanation

**Step-by-Step Solution:**

1. **Definition of Azeotropes**: Azeotropes are specific mixtures of two or more liquids that exhibit unique boiling behavior. When these mixtures are heated, they boil at a constant temperature.

2. **Constant Temperature**: The boiling point of an azeotropic mixture remains the same regardless of the composition of the mixture, as long as the pressure remains constant. This means that the vapor produced during boiling has the same composition as the liquid mixture.

3. **Implication of Azeotropes**: Because azeotropes boil at a constant temperature, they cannot be separated into their individual components by simple distillation. This is due to the fact that the vapor phase has the same composition as the liquid phase at the azeotropic point.

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