Concept explainers
Interpretation: The reason for the formation of polar ozone hole 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 process of formation of polar ozone holes.
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Chapter 21 Solutions
Chemistry: Atoms First
- Explain the difference between the effects of ground- level ozone and stratospheric ozone. Why is one beneficial to human life, whereas the other is not?arrow_forwardWhat is the biological importance of stratospheric ozone? Explain.arrow_forwardWith the help of chemical equations, explain how ozone absorbs UV light.arrow_forward
- Explain the role of ozone gas in troposphere and stratosphere. What do you understand by ozone layer depletion? Explain the causes and solution of ozone layer depletion.arrow_forwardExplain what triggers the formation of the ozone hole over Antarctica.arrow_forwardexplain the cycle for the formation of ozone layer in the stratosphere. Inlcude pictures and the chemical reactionsarrow_forward
- Why is stratospheric ozone beneficial to life on Earth, whereas tropospheric (ground-level) ozone is not?arrow_forwardWhy ozone layer depletion is an environmental hazard? Mention any two ways by which depletion of ozone layer can be avoided.arrow_forwardWhy is carbon monoxide a dangerous air pollutant? How does it affect human health at low levels and at high levels?arrow_forward
- Explain the following briefly: 1. Ozone layer depletion through chlorofluorocarbonsarrow_forwardWhen ozone levels in urban areas reach unhealthy levels, residents are typically urged to avoid refueling their cars during daylight hours. Explain how this might help to reduce smog formation.arrow_forwardThe temperature and pressure of ozone in the stratosphere are 250 K and 0.001 atm, respectively. How many ozone molecules are present in 1.0 L of air under these conditions?arrow_forward
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