Question

Ozone depletion over Antarctica is due to the:

• A. formation of chlorine nitrate ($\left(ClON{O}_2\right)$)
• B. formation of $HCl$
• C. formation of $HOCl$ and ${Cl}_2$ which are converted back into reactive $Cl$ atoms
• D. None of the above

Answer 1

The correct option is C formation of $HOCl$ and ${Cl}_2$ which are converted back into reactive $Cl$ atoms

$HOCl$ and ${Cl}_2$ are formed over Antarctica.These are converted back into reactive $Cl$ atoms which start the chain reaction with $O_3$ causing its depletion.