distillation can't seperate two miscible liquids of pressure difference of less than 25 celsius

Fractional Distillation vs Destructive Distillation
Fractional Distillation:
- Fractional distillation is a process used to separate different components of a mixture based on their boiling points.
- It is a physical separation technique that is commonly used in industries to separate components of crude oil, ethanol, and other mixtures.
- The process involves heating the mixture to its boiling point and then collecting the vapor as it condenses at different temperatures.
- The components with lower boiling points will condense at higher levels in the fractionating column, while components with higher boiling points will condense at lower levels.
- Fractional distillation is a non-destructive process as it does not alter the chemical composition of the components.
Destructive Distillation:
- Destructive distillation is a chemical process that involves heating organic material in the absence of air to break it down into simpler compounds.
- This process is used to convert complex organic materials such as coal, wood, or oil shale into simpler compounds like gases, liquids, and solids.
- Destructive distillation produces a variety of products such as coal tar, gas, and char, depending on the temperature and conditions of the process.
- Unlike fractional distillation, destructive distillation results in the decomposition of the original material and the formation of new compounds.
- This process is commonly used in industries to produce products like coke, coal tar, and various chemicals.
In conclusion, fractional distillation is a physical separation process used to separate components based on their boiling points, while destructive distillation is a chemical process that breaks down organic materials into simpler compounds.