Class 9

Chemistry 

Dated: 27-8-20                                                                                    Due Date:29-8-20

Topic: Is Matter around us Pure

Q1. Complete the following:

What is fractional distillation?

Fractional distillation is the process used to separate two or _____________liquids based upon differences in boiling point. Example: Ethanol has a boiling point of_____________. Water has a boiling point of_____________.

Both water and ethanol are infinitely miscible in one another. This means the resulting mixture looks like a___________ liquid no matter how much ethanol or water is added. Water and ethanol can be separated by the process of fractional distillation.

 

Q2. Fractional distillation is suitable for separation of miscible liquids with a boiling point difference of about 25 K or less. What part of fractional distillation apparatus makes it efficient and possess an advantage over a simple distillation process? Explain using a diagram.