What is the ozone depletion equation?
ClO + O = Cl + O2
The ozone depletion is also referred to as the “ozone hole”, due to the fact that its reduction is not uniform, but mainly concentrated in the Antarctic region, with reductions up to 70 per cent.
What is ozone depletion explain?
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. Ozone can be destroyed more quickly than it is naturally created.
How does an OD deplete ozone layer?
ODS are generally very stable in the troposphere and only degrade under intense ultraviolet light in the stratosphere. When they break down, they release chlorine or bromine atoms, which then deplete ozone.
What does ODP measure?
The ODP is a number which refers to the amount of stratospheric ozone depletion caused by a substance. In this regard, ODP was treated as the ratio of the impact on ozone of a chemical compared to the impact of a similar mass of R-11. Thus, the ODP of R-11 was defined to be 1.0.
How is ozone formed equation?
O2 + ℎν(<242 nm) → 2 O. Each oxygen atom then quickly combines with an oxygen molecule to form an ozone molecule: O + O2 → O. The ozone–oxygen cycle: the ozone molecules formed by the reaction above absorb radiation having an appropriate wavelength between UV-C and UV-B.
What are the 2 types of ozone?
Ozone or “O3” is a colorless gas composed of three atoms of oxygen (O3). There are two types of ozone, both “good” ozone and “bad” ozone.
What is ozone layer depletion PDF?
about depletion of the ozone layer is the anticipated increase in. the amounts of ultraviolet radiation received at the surface of. the earth and the effect of this on human health and on the. environment. The prospects of ozone recovery remain uncertain.
What gas causes ozone depletion?
The main substances include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons, carbon tetrachloride, methyl chloroform and methyl bromide. The damage to the ozone layer caused by each of these substances is expressed as their ozone depletion potential (ODP).
What are 3 causes of depletion to the ozone layer?
The main reasons for the ozone hole are chlorofluorocarbons, carbon tetrachloride, methyl bromide and hydrochlorofluorocarbons.
Which is most responsible for depletion of o3 layers?
chlorofluorocarbons (CFCs)
The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants, and foam- blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons).
What is ODP and GWP?
Ozone Depletion Potential (ODP) of a chemical compound is the relative amount of degradation it can cause to the ozone layer. Global Warming Potential (GWP) is a measure of how much a given mass of a gas contributes to global warming.
What is the difference between ODP and GWP?
The less the value of the ODP the better the refrigerant is for the Ozone Layer and the Environment. The GWP, or Global Warming Potential, is a measurement of how much effect the given refrigerant will have on Global Warming in relation to Carbon Dioxide.
What is ozone explain with equation?
Formation of Ozone : The UV radiations split molecular oxygen O2 apart into free oxygen atoms O + O. These atoms then combine with molecular oxygen to form ozone. O2 → O + O O + O2 → O3Effect : Ozone layer shields the surface of the earth from damaging UV radiations of the sun. Related Answer.
What is the chemical name of O3?
TrioxygenOzone / IUPAC ID
Ozone (), or trioxygen, is an inorganic molecule with the chemical formula O3. It is a pale blue gas with a distinctively pungent smell. It is an allotrope of oxygen that is much less stable than the diatomic allotrope O2, breaking down in the lower atmosphere to O2 (dioxygen).
What is O3 called?
Ozone
Ozone is a molecule made up of three oxygen atoms, often referenced as O3.
How ozone layer is formed PDF?
In the first step, solar ultraviolet radiation breaks apart one oxygen molecule (O2) to produce two oxygen atoms (2 O) (see Figure Q2-1). In the second step, each of these highly reactive atoms combines with an oxygen molecule to produce an ozone molecule (O3).
Is co2 responsible for ozone depletion?
Carbon dioxide causes depletion of ozone layer thereby allowing more UV-radiations to reach the earth.
What are ozone-depleting chemicals?
Ozone depleting substances include:
- chlorofluorocarbons (CFCs)
- hydrochlorofluorocarbons (HCFCs)
- hydrobromoflurocarbons (HBFCs)
- halons.
- methyl bromide.
- carbon tetrachloride.
- methyl chloroform.
What are the 5 effects of ozone depletion?
Effects Of Ozone Layer Depletion
Studies demonstrate that an increase in UV-B rays causes a higher risk of skin cancer, plays a major role in malignant melanoma development, sunburns, quick ageing, eye cataracts, blindness and weekend immune system.
What is ODP mean in refrigerant?
Ozone Depletion Potential
Refrigerants can thus also be ranked according to their impact on the stratospheric ozone layer (the Ozone Depletion Potential, ODP) or as greenhouse gases (the Global Warming Potential, GWP).
How do you calculate GWP?
It is calculated as GWP multiplied by mass of the other gas. For example, if a gas has GWP of 100, two tonnes of the gas have CO 2e of 200 tonnes, and 9 tonnes of the gas has CO 2e of 900 tonnes.
What is the relationship between ODP and GWP?
What are the two types of ozone?
What is the Colour of ozone layer?
It is a pale blue gas and consists of three oxygen atoms. Formed in the ozone layer of the stratosphere, it is harmful to life. Ozone, O3, is an allotrope of oxygen. Ozone has pungent an odor, and its color is blue- black in its solid and liquid form.
What color is ozone gas?
pale blue gas
It is a pale blue gas and consists of three oxygen atoms. Formed in the ozone layer of the stratosphere, it is harmful to life. Ozone, O3, is an allotrope of oxygen. Ozone has pungent an odor, and its color is blue- black in its solid and liquid form.