What is the basic principle behind fractional distillation ? *
1 point
The difference in boiling point of two or more miscible liquids is less than 25 K.
The difference in boiling point of two or more miscible liquids is more than 25 K.
The difference in molecular weight of two or more miscible liquids should be 50g/mol.
The liquid should decompose during the process of fractional distillation.
Answers
Answer- The above question is from the chapter 'Is Matter Around Us Pure?'.
Let's know about Fractional Distillation first.
¤ Principle- 1. Two or more than 2 miscible liquids should be there.
2. Difference in boiling points should be less than 25°C/25 K.
3. Liquids shouldn't decompose on heating.
¤ Industrial Applications- 1. To separate chloroform and benzene.
2. To separate Ethyl Alcohol from water.
3. To separate components of petroleum.
4. To separate components of air.
¤ Diagram- (The diagram has been attached.)
Given question: What is the basic principle behind fractional distillation?
1. The difference in boiling point of two or more miscible liquids is less than 25 K.
2. The difference in boiling point of two or more miscible liquids is more than 25 K.
3. The difference in molecular weight of two or more miscible liquids should be 50g/mol.
4. The liquid should decompose during the process of fractional distillation.
Answer: For fractional distillation, difference in boiling points should be less than 25°C/25 K.
∴ 1 is the correct option.
Answer:
Separation of a liquid mixture into fractions differing in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column is called fractional distillation. In other words, separation process in which the volatile components (having different boiling points) and the difference is less than 25 K of a mixture (such as crude oil) are split from one another by heating the mixture in a column and collecting and condensing the vapours drawn from different levels of the column.
Step-by-step explanation: