A factory was started near a village. Suddenly villagers started feeling the presence of irritating vapours in the village and cases of headache, chest pain, cough, dryness of throat and breathing problems increased. Villagers blamed the emissions from the chimney of the factory for such problems. Explain what could have happened. Give chemical reactions for the support of your explanation.

Answers (1)

In an automobile engine, fossil fuels are burnt at a high temperature which releases oxides of sulphur and nitrogen from the chimney which were experienced by the villagers causing them breathing problems.

Here, dinitrogen and dioxygen combine and produce ample amounts of NO and NO_{2} , as shown below:

N_2(g) + O_{2}(g) \rightarrow 2NO(g) …. (at temperature 1483K)

2NO(g) + O_{2}(g) \rightarrow 2NO_{2}(g)

Combustion of Sulphur containing fossil fuel produces SO_{2}

S + O_{2} \rightarrow SO_{2}(g)

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