what are the causes of ozone layer depletion?

Answer 1

The ozone is three atoms of oxygen linked together. With the help of some molecules (like CFC) they go back to there diatomic form, O2. This molecule can't absorb UV rays like O3 does though.

Answer 2

Chemically speaking, ozone (O3) is a triatomic molecule of oxygen (meaning three oxygen atoms bonded together) and therefore is naturally occurring. In fact, molecular oxygen in the air (O2) can attract a free oxygen, making Ozone, in the presence of an electrical field. Ozone actually has an odor that reminds many people of a "clean" or "fresh" scent and is the distinct smell in the air during highly electrical thunderstorms.

The fact ozone can so easily be made should imply to you that the molecular bond must not be very strong. In fact, it is quiet easy to "knock" the third oxygen off the molecule with ultraviolet light.

Ozone in the stratosphere serves to protect us from ultraviolet radiation by "sacrificing" the spare oxygen, at the same time absorbing energy from the radiation, and forming O2 and a free oxygen. Over time, the free oxygen bump into the O2 and form ozone again. So, while the ozone layer isn't in a steady state, meaning the same amount of ozone is always present, it is in a state of oscillating equilibrium.

Some would have you believe the "hole" is caused by chlorine atoms from CFC (chlor-fluorocarbons) such as air conditioning refrigerants, Styrofoam, hydrocarbons from cars, planes and hairsprays and such. In fact, there is ozone right here on the surface of the planet that would consume most, if not all, of those substances down here. If you live in a major city that experiences low air quality days, one of the chief pollutants is...ozone.

So, you see, ozone is everywhere. It forms spontaneously and it destroys spontaneously...but, luckily for us, it does so at a fairly proportionate rate.

Answer 3

Causes of Ozone Depletion

Ozone depletion occurs when the natural balance between the production and destruction of stratospheric ozone is tipped in favour of destruction. Although natural phenomena can cause temporary ozone loss, chlorine and bromine released from man-made compounds such as CFCs are now accepted as the main cause of this depletion.
As a consequence of their relative stability, CFCs are instead transported into the stratosphere where they are eventually broken down by ultraviolet (UV) rays from the Sun, releasing free chlorine. The chlorine becomes actively involved in the process of destruction of ozone. The net result is that two molecules of ozone are replaced by three of molecular oxygen, leaving the chlorine free to repeat the process:

Cl + O3 ® ClO + O2

ClO + O ® Cl + O2

Ozone is converted to oxygen, leaving the chlorine atom free to repeat the process up to 100,000 times, resulting in a reduced level of ozone. Bromine compounds, or halons, can also destroy stratospheric ozone. Compounds containing chlorine and bromine from man-made compounds are known as industrial halocarbons.

Emissions of CFCs have accounted for roughly 80% of total stratospheric ozone depletion. Thankfully, the developed world has phased out the use of CFCs in response to international agreements to protect the ozone layer. However, because CFCs remain in the atmosphere so long, the ozone layer will not fully repair itself until at least the middle of the 21st century. Naturally occurring chlorine has the same effect on the ozone layer, but has a shorter life span in the atmosphere

Answer 4

The ozone layer depletion is cuased by many chemicals. CFC is the most infamous of them. As written in other answer, this breaks down O3 [ ozone] to oxygen[O2]. But, the hardest fact is that, the CFC is not depleted in this process. CFC acts as an inermediate stage. CFC is an catalyst here.

CFC takes one atom of oxygen from an ozone leaving a oxygen molecule. That {CFC+Oxgen molecule} attacks another ozone molecule and takes another oxygen atom converting this ozone into oxygen. Now, the {CFC+ oxygen atom+oxygen atom} decomposes to CFC and O2[oxygen].

So, u see one CFC converts two ozone into three molecules O2[oxygen], and still that CFC remains unchanged. Thus the CFC goes killing on more ozones.

Thank you very much.

Answer 5

nicely, my opinion, in holding with how ozone is shaped: O2 + UV = O + O O + O2 = O3 Then it starts over, and UV and ozone are consistently growing and destroying one yet another. as long as there is oxygen, we may have a healthful ozone layer. besides the undeniable fact that, listed the following are 2 aspects to the argument.

Answer 6

Primarily the efflorence of Hydro-Flouro carbons, commonly found in aresol propellants commonly used in the production of polyurethane foams and EPS. Several countries signed a pact several years ago called the Montreal Protocol, eliminating the production of these ozone depleting compounds, and then the most recent was called the Toyko Protocol, further eliminating the production of HCFC's. Most third world countries have not subscribed to this pact, and thus they still allow production andshipment of these damaging products.

Answer 7

the no. 1 cause of ozone layer depletion for to day. Aircondition using prion.

Answer 8

CO lashes on to the ozone particles and displace them.