Chlorous acid

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Chlorous acid is a weak and unstable acid with the chemical formula HClO_2. It is an intermediate in the production of chlorine dioxide and is rarely encountered in its pure form. Chlorous acid is known primarily in the form of its salts, known as chlorites.

Chemical Properties

Chlorous acid is a weak acid and is not typically found in a pure state due to its instability. It decomposes into chlorine dioxide (ClO_2) and chloric acid (HClO_3). The acid is known to be a powerful oxidizing agent.

Production

Chlorous acid can be produced by the reaction of chlorine dioxide with water:

ClO_2 + H_2O → HClO_2 + HClO_3

Uses

Chlorous acid itself has limited direct applications due to its instability. However, its salts, chlorites, are used in various industrial processes, including water treatment and bleaching.

Safety

Chlorous acid is a strong oxidizer and can pose significant hazards if not handled properly. It should be stored and used with caution, avoiding contact with organic materials and reducing agents.

Related Compounds

• Chloric acid
• Hypochlorous acid
• Perchloric acid
• Chlorine dioxide
• Chlorite

See Also

• Oxidizing agent
• Acid
• Chlorine compounds