chlorous acid

noun

a hypothetical acid, HClO 2 , known only in solution or in the form of its salts.

chlorous acid

noun

an unstable acid that is a strong oxidizing agent. Formula: HClO 2

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Word History and Origins

Origin of chlorous acid¹

First recorded in 1835–45

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Chlorous acid is not known in the pure condition; but its sodium salt is prepared by the action of sodium peroxide on a solution of chlorine peroxide: 2ClO2 + Na2O2 = 2NaClO2 + O2.