Redistillation

Question 1

What is the purpose of a second distillation?

Answer 1

To separate the product from any organic impurities

This is necessary when boiling points of organic liquids are close together.

Question 2

What should be done to the distillation apparatus before a second distillation?

Answer 2

It must be cleaned and dried

This ensures that no previous contaminants affect the new distillation.

Question 3

During the second distillation, what should be collected?

Answer 3

Only the product with the boiling point of the compound you are trying to make

This helps achieve a purer product.

Question 4

What is the relationship between boiling range and product purity?

Answer 4

The narrower the boiling range, the purer the product

This indicates that a more precise distillation leads to better separation of compounds.

Question 5

Fill in the blank: The distillation apparatus should be _______ before setting it up again for a second distillation.

Answer 5

[cleaned and dried]

Question 6

True or False: A second distillation is unnecessary if the boiling points of the organic liquids are far apart.

Answer 6

True

A second distillation is primarily needed when boiling points are close.