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Carbonic acid (H₂CO₃)

Carbonic acid (H₂CO₃)

Colourless, odourless liquid produced by dissolving carbon dioxide in water.

Chemistry

Keywords

carbonic acid, carbonated water, weak acid, diprotic acid, carbon dioxide, water, carbonates, hydrogen carbonates, carbonated, mineral water, labile, sour, bubble, inorganic chemistry, chemistry

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Carbonic acid H₂CO₃

Information

Molar mass: 62.03 g/mol

Density: 1.0000 g/cm³

Properties

Carbonic acid only exists as an aqueous solution. It is a colourless, odourless, weak acid. When exposed to air for a longer period of time or to heat, it breaks down into carbon dioxide and water. Its salts are called carbonates, while its acid salts are called hydrogen carbonates.

Occurrence and production

In nature, carbonic acid is produced through the dissolution of atmospheric carbon dioxide in water. This plays an important role in weathering processes and in the creation of soil. Its salts are widespread with the most common carbonates being limestone and dolomite. In industry, it is produced by dissolving carbon dioxide in water.

Uses

Carbonic acid is added to mineral water and soft drinks.

Space-filling

Narration

Related items

Calcium carbonate (CaCO₃)

Limestone is a widely and diversely used material.

Carbonate ion (CO₃²⁻)

A compound ion produced from carbonic acid by releasing protons.

Carbon cycle

Carbon is bound in organic substances during photosynthesis, while during breathing, it is released into the atmosphere.

Carbon dioxide (CO₂) (beginner)

Colourless, odourless, heavier-than-air gas. Necessary for the photosynthesis of plants.

Carbon dioxide (CO₂) (intermediate)

Colourless, odourless, heavier-than-air gas. Necessary for the photosynthesis of plants.

Carbon monoxide (CO) (beginner)

Colourless, odourless gas, highly toxic to humans and animals in high concentration.

Carbon monoxide (CO) (intermediate)

Colourless, odourless gas, highly toxic to humans and animals in high concentration.

Water (H₂O)

Water is a very stable compound of hydrogen and oxygen, vital for all known forms of life. In nature it occurs in liquid, solid and gaseous state.

Karst region (intermediate)

Karst formations include dolines and dripstones.

Nitric acid (HNO₃)

One of the oxoacids of nitrogen. A colourless compound with a pungent odour, a strong oxidant.

Nitrous acid (HNO₂)

One of the oxoacids of nitrogen. Colourless, moderate acid with a pungent odour, that exists only in aqueous solution.

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