What types of compounds have been implicated in ozone depletion?
Ozone depleting substances
- chlorofluorocarbons (CFCs)
- halon.
- carbon tetrachloride (CCl4)
- methyl chloroform (CH3CCl3)
- hydrobromofluorocarbons (HBFCs)
- hydrochlorofluorocarbons (HCFCs)
- methyl bromide (CH3Br)
- bromochloromethane (CH2BrCl)
Which compounds is mainly responsible for depletion of ozone layer?
Chlorofluorocarbons (CFCs) and other halogenated ozone-depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).
What are CFCs and HFCs?
Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons destroy the earth’s protective ozone layer, which shields the earth from harmful ultraviolet (UV-B) rays generated from the sun.
Which compound is a HFC?
hydrofluorocarbon (HFC), any of several organic compounds composed of hydrogen, fluorine, and carbon. HFCs are produced synthetically and are used primarily as refrigerants.
What is HCFC compound?
HCFCs are compounds containing carbon, hydrogen, chlorine and fluorine. Industry and the scientific community view certain chemicals within this class of compounds as acceptable temporary alternatives to chlorofluorocarbons.
What elements are in CFC HFC HCFC and halons?
Chlorofluorocarbons (CFCs) contain Carbon and some combination of Fluorine and Chlorine atoms. Hydrofluorocarbons (HFCs) contain Hydrogen, Fluorine, and Carbon (no chlorine). Hydrochlorofluorocarbons (HCFCs) contain Hydrogen, Chlorine, Fluorine, and Carbon atoms.
Which element of a CFC or HCFC molecule causes ozone depletion?
Ozone Depletion. When chlorine and bromine atoms come into contact with ozone in the stratosphere, they destroy ozone molecules. One chlorine atom can destroy over 100,000 ozone molecules before it is removed from the stratosphere.
Which compound is a CFC?
chlorofluorocarbon (CFC), any of several organic compounds composed of carbon, fluorine, and chlorine. When CFCs also contain hydrogen in place of one or more chlorines, they are called hydrochlorofluorocarbons, or HCFCs. CFCs are also called Freons, a trademark of the E.I.
What is HFC and CFC?
What compound is a HFC?
Which element of a CFC or HCFC molecule causes ozone depletion a fluorine B chlorine C Carbon D Hydrogen?
Chlorofluorocarbon (CFC) refrigerants are so named because: they contain the elements Chlorine, Fluorine, and Carbon. CFCs have the highest: ozone depletion potential (ODP) and are the most harmful to stratospheric ozone.
Which of the following compounds is not involved in the depletion of stratospheric ozone?
So, CH4 does not contain a halogen therefore it is not responsible for the depletion of ozone layer.