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How ozone is formed from the oxygen present in atmosphere? |
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Answer» Solution :The upper stratosphere consists of considerable amount of OZONE `(O_3)`, which PROTECTS us from the harmful ultraviolet (UV) radiations coming from the sun. These radiations cause skin cancer in humans. Therefore, it is important to maintain the ozone shield In the stratosphere when UV radiations acting on dioxygen `(O_2)` molecules, the UV radiations split APART molecular oxygen into free oxygen (O) atoms. These oxygen atoms combine with the molecular oxygen to form ozone. `O_(2(g)) overset(UV)to O_((g)) + O_((g))` `O_((g)) + O_(2(g)) overset(UV)to O_(3(g))` Ozone is thermodynamically unstable and decomposes to molecular oxygen. Thus, a dynamic equilibrium exists between the production and decomposition of ozone molecules. The DEPLETION of this protective ozone layer because of the presence of certain chemicals in the stratosphere. |
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