What does nitrous acid mean?

nitrous acid meaning in General Dictionary

an unstable inorganic acid understood only in solution and as nitrite salts

Sentence Examples with the word nitrous acid

Where the nitrous fumes prevail and there is less water present, sulphur dioxide combines with nitrous acid and oxygen to form nitroso-sulphuric acid, a crystalline substance of the formula SO 2 (OH)(ONO).

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