Differentiate Between Positive and Negative Azeotropes
Some differences between positive and negative azeotropes are added in the table below as,
Positive Azeotropes Vs Negative Azeotropes |
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---|---|---|
Characteristics |
Positive Azeotrope |
Negative Azeotrope |
Boiling Point |
Higher than the componentsâ boiling points. |
Lower than the componentsâ boiling points. |
Raoultâs Law Deviation |
Positive Deviation |
Negative Deviation |
Phase Diagram Appearance |
Distillation curve shows a maximum boiling point |
Distillation curve shows a minimum boiling point |
Temperature Changes During Distillation |
Temperature rises during distillation |
Temperature decreases during distillation |
Example |
Acetone-Methanol (8.4% acetone, 91.6% methanol) |
Water-Ethanol (95.6% ethanol, 4.4% water) |
Azeotropic Mixture
Azeotropic Mixture is a mixture of two or more liquids with a similar boiling point and a similar composition in their vapor phase. Unlike most mixtures, an azeotropic mixture has a constant boiling point and composition during the vaporization process. In this article, we will study the different concepts related to Azeotropic mixture in detail.
Table of Content
- What is Azeotropic Mixture?
- Examples of Azeotropic Mixture
- Types of Azeotropic Mixture
- Ideal Solution Vs Azeotropes
- Differentiate Between Positive and Negative Azeotropes
- Separation Techniques for Azeotropic Mixture
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