Does chlorofluorocarbons cause air pollution?

Does chlorofluorocarbons cause air pollution?

Pollutants can also damage the atmosphere above Earth’s surface. A well-known example of this damage is that caused by chlorofluorocarbons (CFCs). CFCs were used for many years as coolant in refrigerators and as cleaning agents. One of the best-known examples of long-range transport of air pollutants is acid rain.

Why are chlorofluorocarbons so damaging because of this?

CFCs can only be destroyed by extremely energetic ultraviolet radiation, such as is found above most of the ozone layer. The photolysis of CFCs generates a highly reactive chlorine atom that can attack ozone or form compounds that destroy ozone.

How does chlorofluorocarbons affect the ozone layer?

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. When sunlight returns in the spring, the chlorine begins to destroy ozone.

Is chlorofluorocarbon a pollutant?

CFCs are now recognized as harmful chemicals because of their ozone-depleting properties. As a consequence, an international agreement known as the Montréal Protocol was forged in 1987 and later strengthened by amendments to decrease and eventually end the use of these chemicals.

How do chlorofluorocarbons destroy the atmosphere causing ozone depletion?

Gaseous CFCs can deplete the ozone layer when they slowly rise into the stratosphere, are broken down by strong ultraviolet radiation, release chlorine atoms, and then react with ozone molecules.

How do chlorofluorocarbons destroy ozone?

Gaseous CFCs can deplete the ozone layer when they slowly rise into the stratosphere, are broken down by strong ultraviolet radiation, release chlorine atoms, and then react with ozone molecules. See Ozone Depleting Substance.)

Is stratospheric ozone harmful?

Stratospheric ozone is “good” because it protects living things from ultraviolet radiation from the sun. Ground-level ozone, the topic of this website, is “bad” because it can trigger a variety of health problems, particularly for children, the elderly, and people of all ages who have lung diseases such as asthma.

What effects can stratospheric ozone depletion have on the environment quizlet?

what are the effects of ozone depletion? The Impacts of Ozone Depletion. Stratospheric ozone filters out most of the sun’s potentially harmful shortwave ultraviolet (UV) radiation. If this ozone becomes depleted, then more UV rays will reach the earth.

Does chlorofluorocarbon damage nerves and tissues?

CFCs can generally impair the human immune system, and scientists have linked direct expose to problems with the central nervous system . These problems might include difficulty breathing or injury to the heart, kidneys and liver.

How are chlorofluorocarbons harmful to the environment?

Ans. Chlorofluorocarbons (CFCs) are a group of odourless manufactured chemicals. Because they damage the earth’s ozone layer, CFCs have been banned since 1996. Depletion of the Ozone Layer will have a negative impact on the biodiversity of the earth itself.

How are chlorofluorocarbons and halons affect the Earth?

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.

How are chlorofluorocarbons used in refrigerants?

Chlorofluorocarbons (CFCs) were commonly used as aerosol spray can propellants. They could also be found in refrigerants in air conditioners and refrigerators. It was discovered that there was a link to the use of CFCs and ozone layer depletion.

Why are we phasing out chlorofluorocarbons in plastics?

The plastics industry, as well as other industries, has been phasing out CFCs, 252 which were once widely used in producing foam products. 249 CFCs chlorine components reportedly destroy ozone in the upper atmosphere.