carbonic-acid

carbonic acid

noun
the acid, H 2 CO 3 , formed when carbon dioxide dissolves in water, known in the form of its salts and esters, the carbonates.

Origin:
1785–95

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Collins
World English Dictionary
carbonic acid
 
n
a weak acid formed when carbon dioxide combines with water: obtained only in aqueous solutions, never in the pure state. Formula: H2CO3

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
carbonic acid   (kär-bŏn'ĭk)  Pronunciation Key 
A weak, unstable acid present in solutions of carbon dioxide in water. It gives carbonated beverages their sharp taste. Chemical formula: H2CO3.
The American Heritage® Science Dictionary
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