what is carbonation

Carbonation is a chemical reaction of carbon dioxide to give carbonates, bicarbonates, and carbonic acid. It is the process of dissolving carbon dioxide gas in a liquid, usually water, to create carbonic acid, which then dissociates into bicarbonate and hydrogen ions. Carbonation is commonly used in the production of carbonated beverages, such as soda, to impart sparkle and a tangy taste and prevent spoilage. The carbon dioxide is generally kept in the water through pressure, either in a bottle or in a natural spring, and will slowly release once that pressure is relieved, forming bubbles of carbon dioxide gas. The process of carbonation is not just about bubbles, though. It also changes the taste of the water by creating a sharp, tangy flavor that can complement some drinks. This is caused by an acid. When the CO2 dissolves in the water, some of it reacts with the water to form carbonic acid, which is responsible for the tangy flavor.