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selenious acid

noun

, Chemistry.
  1. a colorless, crystalline, water-soluble, poisonous powder, H 2 SeO 3 , used chiefly as a reagent.

selenious acid

noun

  1. a white soluble crystalline strong dibasic acid analogous to sulphurous acid. Formula: H 2 SeO 3

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Word History and Origins

Origin of selenious acid1

First recorded in 1825–35

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Example Sentences

Sulphurous acid has no action on selenic acid, but instantly decomposes the selenious acid.

When this is dissolved in water it yields a crystalline hydrate of selenious acid (H2SeO3).

The salts formed by selenious acid (selenites), with the exception of those of the alkali metals, are mostly insoluble in water.

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seleniousselenite

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