The effect of CFC and nitrogen oxides towards depletion of ozone in stratosphere should be determined. Concept Introduction : Atmosphere: The atmosphere is defined as air that is layer of gases which surrounds the earth due to gravity of earth. The earth atmosphere consists of layers such as thermosphere, mesosphere, stratosphere and troposphere depending on the temperature and its composition. Stratosphere: It is found below the mesosphere layer in which the concentration of ozone and other gases are high. The increasing temperature for this layer with respect to increasing height is due to the presence of high concentration of ozone and other gases in it. The increased temperature is due to the response of UV radiation from sun and hence ozone is formed due to this reaction and the use of ozone is that it prevents the UV radiation from the sun which is actually harmful. Chlorofluorocarbon (CFC): They are compounds that contain only carbon, fluorine and chlorine with it. They are gases can be easily liquefied, have little ability to react readily, are non-poisonous and do not catch fire easily. Nitrogen oxides: They are binary compound that contains only oxygen and nitrogen with them. To determine: The effects made by CFC and nitrogen oxides towards depletion of ozone.

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Chapter 21, Problem 21.16QP

Interpretation Introduction

Interpretation: The effect of CFC and nitrogen oxides towards depletion of ozone in stratosphere should be determined.

Concept Introduction:

Atmosphere: The atmosphere is defined as air that is layer of gases which surrounds the earth due to gravity of earth.

The earth atmosphere consists of layers such as thermosphere, mesosphere, stratosphere and troposphere depending on the temperature and its composition.

Stratosphere:

It is found below the mesosphere layer in which the concentration of ozone and other gases are high. The increasing temperature for this layer with respect to increasing height is due to the presence of high concentration of ozone and other gases in it.

The increased temperature is due to the response of UV radiation from sun and hence ozone is formed due to this reaction and the use of ozone is that it prevents the UV radiation from the sun which is actually harmful.

Chlorofluorocarbon (CFC): They are compounds that contain only carbon, fluorine and chlorine with it. They are gases can be easily liquefied, have little ability to react readily, are non-poisonous and do not catch fire easily.

Nitrogen oxides: They are binary compound that contains only oxygen and nitrogen with them.

To determine: The effects made by CFC and nitrogen oxides towards depletion of ozone.

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