Statues and monuments in India are affected by acid rain. How?

Asked by Abhisek | 1 year ago |  70

1 Answer

Solution :-

Oxides of nitrogen (NO2, NO) and sulphur (SO2 and SO3) which are formed due to the burning of coal, automobile fuel and other fossil fuels, form nitric acid (HNO3) and sulphuric acid (H2SO4) by reacting with water in the presence of atmospheric oxygen. This results in ‘Acid rain’.

\( 2SO_{2(g)} + O_{2(g)} + 2H_2O_(l) \rightarrow 2H_2SO_{4(aq)}\)

\( 4NO_(g) + O_{2(g)} + 2H_2O_ (l) \rightarrow 4HNO_{3(aq)}\)

Acid rain harms plants, agriculture and trees. It also causes respiratory problems in humans.

Acid rain damages buildings and structures made of metal and stone. Limestone is a major constituent used in various monuments and statues like Taj Mahal in India.

Acid rain when reacting with limestone causes loss of colour and lustre of monuments, resulting in their disfiguration.

The reaction is as follows:

CaCO3 + H2SO4 →  CaSO4 + H2O + CO2

Answered by Pragya Singh | 1 year ago

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