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Sulphurous Acid

A colourless liquid that acts as a weak acid when dissolved in water, sometimes used as a bleach. Salts of sulphurous acid are called sulphites.

Symbol: H₂SO₃

Also known as: Acid of Burning Sulphur, Phlogisticated Vitriolic Acid, Sulphureum, Volatile Acid of Sulfur.

See also: Acid, Hydrogen, Oxygen, Sulphite, Sulphur, Sulphur Dioxide, Sulphuric Acid.

Subjects: Chemistry