What is a CFC in chemistry?

Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.

What are the chemical properties of CFCs?

Chlorofluorocarbons (CFCs) These compounds are non-flammable, tasteless and odourless, and chemically stable. Their other important property is their volatility, having boiling points close to zero degrees Centigrade.

What are CFCs quizlet?

chlorofluorocarbons (CFCs) Organic compounds made up of atoms of carbon, chlorine, and fluorine. An example is Freon-12 (CCl2F2), used as a refrigerant in refrigerators and air conditioners and in making plastics such as Styrofoam.

Which compound is a CFC or chlorofluorocarbon quizlet?

A chlorofluorocarbon (CFC) is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane.

What are CFCs and how are they formed?

CFCs and HCFCs are usually produced by halogen exchange starting from chlorinated methanes and ethanes. The brominated derivatives are generated by free-radical reactions of the chlorofluorocarbons, replacing C-H bonds with C-Br bonds. The most common CFCs are small molecules containing only one or two carbon atoms.

What are CFCs answer?

Chlorofluorocarbon(CFC) is any of various halocarbon compounds consisting of carbon, hydrogen, chlorine, and fluorine. CFC were once used widely as aerosol propellants and refrigerants. Chlorofluorocarbons are believed to cause depletion of the atmospheric ozone layer.

What is the major concern with CFCs in the atmosphere quizlet?

Chlorofluorocarbons (CFCs) are responsible for ozone depletion. CFCs are released into the atmosphere. Then, UV rays break off chlorine. The chlorine attaches to oxygen from ozone and forms chlorine monoxide (Cl-O).

How do CFCs cause ozone depletion quizlet?

How do CFCs cause ozone depletion? Ultraviolet radiation breaks down CFCs, molecules containing chlorine. Chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule.

How do chlorofluorocarbons contribute to ozone depletion quizlet?

how does Chlorofluorocarbons (CFC’s)affect ozone depletion? , CFCs drift slowly upward to the stratosphere, where they are broken up by ultraviolet radiation, releasing the chlorine that catalytically destroys ozone.

Which compound is a CFC or chlorofluorocarbon?

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.

Which two types of molecules are potential replacements for CFCs?

These gases are being replaced by other compounds: hydrochlorofluorocarbons, an interim replacement for CFCs that are also covered under the Montreal Protocol, and hydrofluorocarbons, which are covered under the Kyoto Protocol. All these substances are also greenhouse gases.

What are CFCs and how do they affect the ozone layer?

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. CFCs and HCFCs also warm the lower atmosphere of the earth, changing global climate.

Which of these sets produce CFCs?

  • Refrigerators and Air Conditioners. The most common emitter of CFCs are refrigerants, particularly those used after the 1930s.
  • Aircraft Halon.
  • Aerosol Sprays.
  • Rogue CFCs.

Are CFCs synthetic chemicals?

Chlorofluorocarbons (CFCs) are synthetic chemicals that are odourless, non-toxic, non-flammable and chemically inert. However, researchers found that the release of CFCs into the atmosphere caused ozone depletion.

How many types of CFCs are there?

CFCs under commercial uses as refrigerants and blowing agents include trichlorofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12), 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113), 1,2-dichlorotetrafluoroethane (CFC-114), and chloropentafluoroethane (CFC-115).

What are CFCs give one example?

Ans. An example of a refrigerant CFC is dichlorodifluoromethane, CF2Cl2 (also known as CFC-12), which boils at -30°C. Another once-common CFC is trichlorofluoromethane, CFCl3 (CFC-11), which boils at 24°C and was once the propellant in around half of all the aerosol cans used in the world.

Which of the following is true of CFCs?

Which of the following is true of chlorofluorocarbons? Answers: The CFC molecules react with ultraviolet light to release chlorine which then destroys ozone. The CFC molecules react with ultraviolet light to release fluorine which then destroys ozone.

Which of the following is a complete form of CFC?

Full form of CFCs is chlorofluorocarbons, commonly known as Freon. CFCs are used in air condition, refrigerators as coolants, as blowing agents for foams, packing materials and as propellants in aerosol cans.

Are CFCs polar?

The CFCs have still higher boiling points because the chloride is even more polarizable than fluoride. Because of their polarity, the CFCs are useful solvents, and their boiling points make them suitable as refrigerants.

What CFC-115?

Chloropentafluoroethane is a chlorofluorocarbon (CFC) once used as a refrigerant and also known as R-115 and CFC-115. Its production and consumption has been banned since 1 January 1996 under the Montreal Protocol because of its high ozone depletion potential and very long lifetime when released into the environment.

Which atom is in a CFC that does the ozone destruction?

Once in the atmosphere, CFCs drift slowly upward to the stratosphere, where they are broken up by ultraviolet radiation, releasing chlorine atoms, which are able to destroy ozone molecules.

What are the uses of CFC?

Chlorofluorocarbons (CFCs) are largely used as refrigerants, solvents, degreasing agents in the electronic industry, blowing agents in plastic formation and propellants for aerosol cans.

How are CFCs named?

CFC’s (chlorofluorocarbons) Midgley and Henne developed in 1929 a naming system for halocarbons containing carbon, hydrogen, chlorine and fluorine. Park refined the system some years later. CFC (chlorofluorocarbons) was the group name, which was later divided into sub-groups like HCFC and HFC.

What is the atom from CFCs that actually reacts with the ozone quizlet?

What happens when UV strikes CFCs? A carbon-chlorine bond breaks, producing a chlorine (Cl) atom. The chlorine atom then reacts with an ozone (O3) molecule, breaking it apart and destroying the ozone.

Which chemical is mainly considered responsible for the depletion of ozone layer?

Ozone depleting substances are chemicals that destroy the earth’s protective ozone layer. They include: chlorofluorocarbons (CFCs) halon.

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