Question

which three helps mostly for acid rain
so2 h2s so3 no2 no Your question (max 1024 symbols)

Answer 1

Answer on Question #39400-Chemistry-Inorganic Chemistry

Question

Which three helps mostly for acid rain

$\mathrm{SO}_2$ $\mathrm{H}_2\mathrm{S}$ $\mathrm{SO}_3$ $\mathrm{NO}_2$ NO

Answer

$\mathrm{SO}_3$, $\mathrm{NO}_2$ and $\mathrm{SO}_2$ contribute mostly for acid rain, because when reacting with water they form sulfuric acid: $\mathrm{SO}_3 + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{H}_2\mathrm{SO}_4$,

nitric and nitrous acid: $2\mathrm{NO}_2 + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{HNO}_3 + \mathrm{HNO}_2$

and sulfurous acid: $\mathrm{SO}_2 + \mathrm{H}_2\mathrm{O} \rightarrow \mathrm{H}_2\mathrm{SO}_3$,

Sulfuric and nitric acids are strong acids and sulfurous acid is medium acid.

$\mathrm{H}_2\mathrm{S}$ and NO contribute much less for acid rain because $\mathrm{H}_2\mathrm{S}$ is very weak acid, and NO does not react with water, and form very weak nitrous acid only under the influence of oxygen:

$4\mathrm{NO} + \mathrm{O}_2 + 2\mathrm{H}_2\mathrm{O} \rightarrow 4\mathrm{HNO}_2$