Question

write the chemical equation of formation of ozone molecule.​

Answer 1

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Write the Chemical Equation of Formation of Ozone Molecule

$\huge\tt\colorbox{pink}{Answer}$

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.

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Answer 2

$\huge\mathcal{Answer}$

The ozone–oxygen cycle is the process by which ozone is continually regenerated in Earth's stratosphere, converting ultraviolet radiation (UV) into heat. In 1930 Sydney Chapman resolved the chemistry involved. The process is commonly called the Chapman cycle by atmospheric scientists.

$\mathcal\red{Refer \:to \:Attachment:-}$

• Ozone–oxygen cycle in the ozone layer: 1. Oxygen photolyzed to atomic oxygen 2. Oxygen and ozone continuously interconverted. Solar UV breaks down oxygen; molecular and atomic oxygen combine to form Ozone. 3. Ozone is lost by reaction with atomic oxygen (plus other trace atoms).

$\mathcal{Creation:}$

• An oxygen molecule is split (photolyzed) by higher frequency UV light (top end of UV-B, UV-C and above) into two oxygen atoms (see figure):

O2 + ℎν(<242 nm) → 2 O

• Each oxygen atom then quickly combines with an oxygen molecule to form an ozone molecule:

O + O2 → O3

$\mathcal{The \:ozone–oxygen \:cycle:}$

• The ozone molecules formed by the reaction above absorb radiation having an appropriate wavelength between UV-C and UV-B. The triatomic ozone molecule becomes diatomic molecular oxygen plus a free oxygen atom (see figure):

O3 + ℎν(240–310 nm) → O2 + O

• The atomic oxygen produced quickly reacts with another oxygen molecule to reform ozone:

O + O2 + A → O3 + A

• Where A denotes another molecule or atom, like N2 or O2 which is needed in the reaction as otherwise energy and momentum wouldn't be conserved: There is an excess energy of the reaction which is manifested as extra kinetic energy.