Calcium Carbonate Marble Acid Rain

Calcium carbonate the main component of marble is not soluble in water.

Calcium carbonate marble acid rain.

Because surface waters are in equilibrium with atmospheric carbon dioxide there is a constant concentration of carbonic acid h 2 co 3 in the water. Acid rain effects on buildings acids have a corrosive effect on limestone or marble buildings or sculptures. Stone surface material may be lost all over or only in spots that are more reactive. Acids in acid rain promote the dissolution of calcium carbonate by reacting with the carbonate anion.

Acid rain has the following reaction with the marble calcium carbonate. A chemical reaction equation 9 between calcium carbonate and sulfuric acid the primary acid component of acid rain results in the dissolution of caco. Acid precipitation affects stone primarily in two ways. Calcium carbonate is a chemical compound with the formula ca co 3 it is a common substance found in rocks as the minerals calcite and aragonite most notably as limestone which is a type of sedimentary rock consisting mainly of calcite and is the main component of pearls and the shells of marine organisms snails and eggs calcium carbonate is the active ingredient in agricultural lime and.

Calcium sulphate water carbon dioxide gas. Although these are recognized as highly durable materials buildings and outdoor monuments made of marble and limestone are now being gradually eroded away by acid rain. How does this happen. How does acid precipitation affect marble and limestone buildings.

It is well established that either wet or dry deposition of sulfur dioxide significantly increases the rate of corrosion on limestone sandstone and marble. Limestone is one familiar form of calcium carbonate. Calcium carbonate chemically reacts with acids the main acid in acid rain is sulphuric acid formed from sulphur dioxide emissions to form a salt e g. When sulfurous sulfuric and nitric acids in polluted air react with the calcite in marble and limestone the calcite dissolves.

Caco 3 h 2 so 4 caso 4 h 2 o co 2 the formation of calcium sulphate results in the corrosion of this beautiful monument. This produces a solution of bicarbonate.