EVERYDAY SCIENCE

Detailed explanation-1: -Carbonation is the mixing of water with the atmospheric carbon-dioxide to form carbonic acid. Rainwater reacts with carbon dioxide in the atmosphere to form carbonic acid. This reacts with calcium carbonate present in rocks like limestone to form a solution.

Detailed explanation-2: -Carbonic acid (H2C03). The hypothetical acid of carbon dioxide and water. It exists only in the form of its salts (carbonates), acid salts (hydrogen carbonates), amines (carbamic acid), and acid chlorides (carbonyl chloride). ( From Grant and Hackh’s Chemical Dictionary, 5th ed)

Detailed explanation-3: -Carbon dioxide, also called carbonic acid gas, contains a central carbon atom attached to two oxygen atoms through covalent double bonds. The properties of carbon dioxide are tabulated in Table 9.1. Table 9.1.

Detailed explanation-4: -When carbon dioxide reacts with water, carbonic acid is formed, from which hydrogen ions dissociate, increasing the acidity of the system. Therefore, in addition to any greenhouse effect, anthropogenic carbon dioxide emissions to the atmosphere can increase the acidity of the atmosphere and precipitation.

Detailed explanation-5: -When carbon dioxide dissolves in water, carbonic acid is formed. The formula for carbonic acid is H2CO3 H 2 C O 3 .