Carbonic acid is the chemical compoond wi the formula H2CO3 (equivalently OC(OH)2). It is an aa a name whiles gien tae solutions o carbon dioxide in watter (carbonatit watter), acause sic solutions contain smaa amoonts o H2CO3. Carbonic acid, which is a weak acid, furms twa kinds o sauts, the carbonates an the bicarbonates. In geology, Carbonic acid causes limestane tae dissolve producin calcium bicarbonate which leads tae mony limestone featurs sic as stalactites an stalagmites.

Carbonic acid
Structural formula
Ball-and-stick model
Names
IUPAC name
Carbonic acid
Ither names
Carbon dioxide solution; Dihydrogen carbonate; acid o air; Aerial acid; Hydroxymethanoic acid
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.133.015
KEGG
Properties
H2CO3
Molar mass 62.03 g/mol
Density 1.668 g/cm3
Exists only in solution
Acidity (pKa) 6.367 (pKa1), 10.32 (pKa2)
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
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Infobox references