1. What are the reactions involved in removing SO_2 from the atmo… - Vidyadip

Question

What are the reactions involved in removing $\text{SO}_2$ from the atmosphere by passing it through a solution containing citrate ions?
What is the most important sink of CO pollutant?
How are fuel gases from industries freed from oxides of nitrogen and sulphur?

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Answer

$\text{SO}_2\text{(g)}+\text{H}_2\text{O(l)}\rightleftharpoons\text{HSO}^-_3(\text{aq})+\text{H}^+(\text{aq})$

$\text{HSO}^-_3+\text{H}_2\text{Cit}^-\xrightarrow{\ \ \ \ \ \ \ \ }(\text{SO}_3.\text{H}_2\text{Cit})^{2-}$

Soil microorganisms.
By scrubbing them with conc. $\mathrm{H}_2 \mathrm{SO}_4$ or with alkaline solutions like $\mathrm{Ca}(\mathrm{OH})_2$ and $\mathrm{Mg}(\mathrm{OH})_2$.

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