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carbonic acid

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noun
  1. the acid, H2CO3, formed when carbon dioxide dissolves in water, known in the form of its salts and esters, the carbonates.
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Origin of carbonic acid

First recorded in 1785–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for carbonic acid

carbonic acid

noun
  1. a weak acid formed when carbon dioxide combines with water: obtained only in aqueous solutions, never in the pure state. Formula: H 2 CO 3
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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

carbonic acid in Science

carbonic acid

[kär-bŏnĭk]
  1. A weak, unstable acid present in solutions of carbon dioxide in water. It gives carbonated beverages their sharp taste. Chemical formula: H2CO3.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.