How does marble get corroded?

The marble statues often slowly get corroded when kept in air for a long time. This is because the marble does react with the acidic compounds which are present in the air, like carbonic acid, sulphuric acid and nitric acid etc. This also leads to the acid rain.

What does sulfuric acid do to marble?

When sulfurous, sulfuric, and nitric acids in polluted air and rain react with the calcite in marble and limestone, the calcite dissolves. In exposed areas of buildings and statues, we see roughened surfaces, removal of material, and loss of carved details.

What is the chemical reaction of sulfuric acid reacting with limestone in water?

Sulfuric acid reacts with the free lime (CaCO3) which is insoluble in water. The reaction between sulfuric acid and lime to form gypsum takes minutes. H2SO4 + CaCO3 (lime) = CaSO4 (gypsum). Lime is insoluble in water.

Which compound would act as an oxidizing agent in the above process?

d) calcium oxide​ would act as an oxidizing agent in the given process. Explanation: Calcium oxide (CaO), sometimes known as quicklime or burned lime, is a chemical substance that is frequently utilized.

Is marble a chemical reaction?

Marble is chemically calcium carbonate i.e. CaCO3 . When dilute HCl is added to calcium carbonate, it forms calcium chloride, water and carbon dioxide. (A) The gas formed as the result of this chemical reaction is – Carbon Dioxide i.e. CO2.

What happens when acid reacts with marble?

Both hydrochloric (HCl) and nitric (HNO3) acids react with marble (CaCO3) and release CO2. In contrast, sulfuric acid reacts with marble to form gypsum (CaSO4), which forms a protective barrier on the surface of the stone, so that no visible damage occurs.

What is the reaction between marble and acid?

Marble chips react with dilute hydrochloric acid to produce carbon dioxide gas. The rate of this reaction can be changed by changing the size of the marble chips.

How does acid react with marble?

How does acid rain cause corrosion of marble statues?

The gaseous oxides ( CO₂, NO₂ and SO₂) present in air (chemical pollutants) mix with water in air and form acids like carbonic acid, nitric acid and sulphuric acid. These acid come down as acid rain and causes corrosion of marble statues. Calcium carbonate present in marble it transformed into other compounds by reaction acid as follow:-

What happens when sulfuric acid is added to marble?

When sulfurous, sulfuric, and nitric acids in polluted air and rain react with the calcite in marble and limestone, the calcite dissolves. In exposed areas of buildings and statues, we see roughened surfaces, removal of material, and loss of carved details.

What happens to marble when it gets polluted?

When sulfurous, sulfuric, and nitric acids in polluted air and rain react with the calcite in marble and limestone, the calcite dissolves. In exposed areas of buildings and statues, we see roughened surfaces, removal of material, and loss of carved details. Stone surface material may be lost all over or only in spots that are more reactive.

Why do marble statues often slowly get corroded when kept open?

Q5: Marble statues often slowly get corroded when kept in open for a long time. Assign a suitable explanation. Answer: The discoloration of marble is due to its corrosive reaction with gaseous oxides in air.