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7.22  How is SO_{2} an air pollutant?

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  •  Sulphur dioxide SO_2 is considered an air pollutant because it readily undergoes oxidation in the atmosphere to form Sulphur trioxide SO_3 which then reacts with water vapour to form sulphuric acid H_2SO_4.  Which comes down in the form of acid rain. acid rain causes deforestation which is also not good for the environment.
  • Even in low concentration of SO_2 causes the irritation in the eyes, respiratory problem and due to this it affects the larynx to cause breathlessness.
  • Harmful for plants also, long exposure to SO_2 can reduce the colour of the leaves. It is because the formation of chlorophyll is affected by sulphur dioxide.

 

Posted by

Pankaj Sanodiya

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