Draw a labelled diagram of simple distillation and fractional distillation.

Fractional distillation is the process used to separate a mixture of miscible liquids whose boiling points differ by less than 25°.

The experimental setup is similar to that of distillation except for a fractionating column which is filled with glass beads.

In this method, the mixture is heated using a burner, and both the liquids most likely enter the vapour state. The vapours hit the glass beads in the column and tend to condense. Out of the two vapours. the vapour component which is less volatile cools faster than the other and returns to liquid state

Explanation:

Hope it is helpful...

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.