Ozone is a gas heavier than air. Why does it not settle around the Earth's surface?
(N/A) Ozone is continuously formed in the stratosphere by the action of $UV$ radiation on dioxygen $(O_2)$ and is simultaneously decomposed by $UV$ radiation of wavelength $240-360 \ nm$.
$O_3 \xrightarrow{240-360 \ nm} O_2 + O$
The atomic oxygen $(O)$ then reacts with $O_3$ molecules:
$O_3 + O \rightarrow 2O_2$
Thus,a dynamic equilibrium is established between the formation and decomposition of $O_3$,maintaining a constant concentration of ozone in the stratosphere rather than settling at the surface.
$O_3 \xrightarrow{240-360 \ nm} O_2 + O$
The atomic oxygen $(O)$ then reacts with $O_3$ molecules:
$O_3 + O \rightarrow 2O_2$
Thus,a dynamic equilibrium is established between the formation and decomposition of $O_3$,maintaining a constant concentration of ozone in the stratosphere rather than settling at the surface.
Explore More
Similar Questions
The correct statement about photochemical smog is .... .
From the following,identify the reactions which are responsible for the depletion of the ozone layer.
$I. Cl\dot{O}_{(g)} + NO_{2_{(g)}} \rightarrow ClONO_{2_{(g)}}$
$II. CF_2Cl_{2_{(g)}} \xrightarrow{uv} \dot{Cl}_{(g)} + \dot{CF}_2Cl_{(g)}$
$III. \dot{Cl}_{(g)} + CH_{4_{(g)}} \rightarrow HCl_{(g)} + \dot{C}H_{3_{(g)}}$
$IV. \dot{Cl}_{(g)} + O_{3_{(g)}} \rightarrow Cl\dot{O}_{(g)} + O_{2_{(g)}}$
$V. Cl\dot{O}_{(g)} + O_{(g)} \rightarrow \dot{Cl}_{(g)} + O_{2_{(g)}}$
$I. Cl\dot{O}_{(g)} + NO_{2_{(g)}} \rightarrow ClONO_{2_{(g)}}$
$II. CF_2Cl_{2_{(g)}} \xrightarrow{uv} \dot{Cl}_{(g)} + \dot{CF}_2Cl_{(g)}$
$III. \dot{Cl}_{(g)} + CH_{4_{(g)}} \rightarrow HCl_{(g)} + \dot{C}H_{3_{(g)}}$
$IV. \dot{Cl}_{(g)} + O_{3_{(g)}} \rightarrow Cl\dot{O}_{(g)} + O_{2_{(g)}}$
$V. Cl\dot{O}_{(g)} + O_{(g)} \rightarrow \dot{Cl}_{(g)} + O_{2_{(g)}}$
Cataract and skin cancer are caused by
Which of the following statement$(s)$ is (are) incorrect reason for eutrophication?
$A$. excess usage of fertilisers
$B$. excess usage of detergents
$C$. dense plant population in water bodies
$D$. lack of nutrients in water bodies that prevent plant growth
Choose the most appropriate answer from the options given below:
$A$. excess usage of fertilisers
$B$. excess usage of detergents
$C$. dense plant population in water bodies
$D$. lack of nutrients in water bodies that prevent plant growth
Choose the most appropriate answer from the options given below:
What does the troposphere contain?
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo