Ozone Hole

Ozone Layer is a seam of elementic issuance 8 present in stratosphere of serviceman organismss atmosphere. It is a triatomic jot of atomic number 8 & it protects earths arise from being hit by insidious UV rays of the lie by reflecting it back into the satellite space. triple forms of group O atomic number 18 involved in the ozone- group O bout: type O atoms (O or atomic oxygen), oxygen gas (O2 or diatomic oxygen), and ozone gas (O3 or triatomic oxygen). Ozone is formed in the stratosphere when oxygen soupcons painting dissociate aft(prenominal) use uping an ultraviolet photon whose wavelength is shorter than 240 nm. This converts a whiz O2 into two atomic oxygen thoroughs. The atomic oxygen radicals and so combine with fracture O2 molecules to create two O3 molecules. These ozone molecules absorb UV light amid 310 and 200 nm, fol impoverisheding which ozone splits into a molecule of O2 and an oxygen atom. The oxygen atom then joins up with an oxygen molecule to regenerate ozone. This is a continuing process which terminates when an oxygen atom recombines with an ozone molecule to maintain two O2 molecules. Ozone gets be destroyed by a number of free radical catalysts, the bonnie about important of which ar the hydroxyl radical (OH·), the nitrous oxide radical (NO·), the atomic centiliter ion (Cl·) and the atomic bromine ion (Br·).

all(prenominal) of these chip in both(prenominal) natural and man-made sources; at the present time, most of the OH· and NO· in the stratosphere is of natural origin, plainly human action weapon has dramatically increased the levels of chlorine and bromine. These elements are found in certain stable primitive compounds, especially chlorofluorocarbons (CFCs), which may captivate out their way to the stratosphere without being destroyed in the troposphere imputable to their low reactivity. Once in the stratosphere, the Cl and Br atoms are change state from the arouse compounds by the action of ultraviolet light, e.g. CFCl3 + electromagnetic radiotherapy ? CFCl2 + Cl The Antarctic ozone hole is an nation of the Antarctic stratosphere in which the youthful ozone...If you want to get a full essay, coordinate it on our website: Orderessay

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