Question

How is feron prepared?

Discuss freon preparation.

Describe the preparation of the following compound:

Freon

Answer 1

Freons are usually prepared by halogen exchange reactions, where chlorine atoms in a hydrocarbon (like carbon tetrachloride) are partially replaced by fluorine atoms using hydrogen fluoride (HF) in the presence of a catalyst such as antimony pentachloride (SbCl₅).

\[\ce{\underset{tetrachloride}{\underset{Carbon}{CCl4}} + 2HF ->[SbCl5][]\underset{Freon}{CCl2F2} + 2HCl}\]