Explain in detail about Freons.

(N/A) Freons: The chlorofluorocarbon compounds of methane and ethane are collectively known as Freons. They are extremely stable,unreactive,non-toxic,non-corrosive,and easily liquefiable gases. The most common representative is $CCl_2F_2$,which is known as Freon-$12$.
$(b)$ Properties: Freons are colorless,odorless,and non-corrosive. They do not cause corrosion to metals.
$(c)$ Uses: Freon-$12$ is the most widely used Freon in industries. It is manufactured from tetrachloromethane by the Swarts reaction. They are used as aerosol propellants,refrigerants,and in air conditioning systems.
$(d)$ Environmental Impact: Freons released into the atmosphere initiate free radical chain reactions that can disturb the natural ozone balance in the stratosphere.