By adding Entrainer the __________ azeotropes forms.a)Low boilingb)Hig...
Explanation: Since when we add entrainer the relative volatility increases by formation of low boiling azeotropes.
View all questions of this test
By adding Entrainer the __________ azeotropes forms.a)Low boilingb)Hig...
The correct answer is option 'A': Low boiling.
When an entrainer is added to a mixture of components, it can alter the vapor-liquid equilibrium of the mixture. This alteration can lead to the formation of azeotropes with different boiling points than the original mixture.
An azeotrope is a mixture of two or more components that boils at a constant temperature and has a constant composition. In other words, the vapor produced during boiling has the same composition as the liquid mixture. Azeotropes can be either low boiling or high boiling, depending on the composition of the mixture and the properties of the components.
By adding an entrainer, we can shift the composition of the azeotrope and change its boiling point. This is especially useful in separation processes where it is desirable to separate two components with similar boiling points. The entrainer helps to break the azeotrope and enhance the separation efficiency.
Let's understand it in more detail:
1. Definition of an azeotrope:
- Azeotropes are mixtures of two or more components that have a constant boiling point and composition.
- The vapor phase produced during boiling has the same composition as the liquid mixture.
2. Azeotropic behavior:
- Azeotropic behavior occurs when the vapor-liquid equilibrium of a mixture does not change with the composition.
- Azeotropes can be either low boiling or high boiling, depending on the composition.
3. Role of an entrainer:
- An entrainer is an additional component added to the mixture to alter the vapor-liquid equilibrium and break the azeotrope.
- The entrainer selectively forms a new azeotrope with one of the components, shifting the composition and changing the boiling point.
4. Formation of low boiling azeotropes:
- When an entrainer is added to a mixture, it can form a low boiling azeotrope.
- The entrainer preferentially forms a new azeotrope with one of the components, causing the boiling point of the mixture to decrease.
In summary, by adding an entrainer, low boiling azeotropes can be formed. The entrainer selectively forms a new azeotrope with one of the components, shifting the composition and lowering the boiling point of the mixture. This is a useful technique in separation processes to enhance the separation of components with similar boiling points.