Chemistry - Environmental Chemistry Question with Solution | TestHub
In summer season, nitrogen dioxide and methane react with chlorine monoxide (reaction iv) and chlorine atoms (reaction v) forming chlorine sinks, preventing much ozone depletion, whereas in winter, special type of clouds called polar stratospheric clouds provide surface on which chlorine nitrate formed (reaction iv) gets hydrolysed to form hypochlorous acid (reaction (vi)). It also reacts with hydrogen chloride produced as per reaction (v) to give molecular chlorine.
When sunlight returns to the Antarctica in the spring, the sun's warmth breaks up the clouds and HOCl and Cl2 are photolysed by sunlight, as given in reactions (viii) and (ix).
The chlorine radicals thus formed, initiate the chain reaction for ozone depletion.
Which option is correct for ozone depletion.
Options:
Answer:
Solution:
Question Explanation:
The correct option for ozone depletion.
Concept:
Ozone Hole Formation
Solution:
In summer season, nitrogen dioxide and methane react with chlorine monoxide and chlorine atoms forming chlorine sinks, preventing much ozone depletion.
In winter, special type of clouds called polar stratospheric clouds are formed over Antarctica. These polar stratospheric clouds provide surface on which chlorine nitrate formed gets hydrolysed to form hypochlorous acid chloride produced as per reaction to give molecular chlorine.
When sunlight returns to the Antarctica in the spring, the sun's warmth breaks up the clouds and HOCl and Cl2 are photolysed by sunlight, as given in reactions.
The chlorine radicals thus formed, initiate the chain reaction for ozone depletion as described earliear.
