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nitrous acid

noun, Chemistry
1.
an acid, HNO 2 , known only in solution.
Origin
1670-1680
1670-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for nitrous-acid

nitrous acid

noun
1.
a weak monobasic acid known only in solution and in the form of nitrite salts. Formula: HNO2 Systematic name dioxonitric(III) acid
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
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nitrous-acid in Medicine

nitrous acid n.
A weak inorganic acid existing only in solution or in the form of its salts.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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nitrous-acid in Science
nitrous acid  
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: HNO2.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for nitrous-acid

nitrous acid

(HNO2), an unstable, weakly acidic compound that has been prepared only in the form of cold, dilute solutions. It is useful in chemistry in converting amines into diazonium compounds, which are used in making azo dyes. It is usually prepared by acidifying a solution of one of its salts, the nitrites, which are more stable (see nitrite).

Learn more about nitrous acid with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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