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nitrous acid

American

noun

Chemistry.

an acid, HNO 2 , known only in solution.

nitrous acid British

noun

Systematic name: dioxonitric(III) acid. a weak monobasic acid known only in solution and in the form of nitrite salts. Formula: HNO 2

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

nitrous acid Scientific

A weak inorganic acid existing only in solution or in the form of its salts. It can act either as an oxidizing agent or as a reducing agent. Chemical formula: HNO ₂ .

Etymology

Origin of nitrous acid

First recorded in 1670–80

Example Sentences

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See Examples For:

nitrous acid

The reaction of N2O3 with water gives a pale blue solution of nitrous acid, HNO2.

From Textbooks ● Feb. 14, 2019

Which of the following structures would we expect for nitrous acid?

From Textbooks ● Feb. 14, 2019

Other nitrogen oxides include nitrous acid and nitric acid.

From Textbooks ● Sep. 6, 2018

After the nitrous acid had. acted, the RNA was enabled to clothe itself in a new coat of protein.

From Time Magazine Archive

The necessary diazo compound is prepared by allowing a solution containing nitrous acid to act upon a solution of a primary aromatic amine.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023