<Dl> <Dd> Not to be confused with Carbolic acid, an antiquated name for phenol . </Dd> </Dl> <Dd> Not to be confused with Carbolic acid, an antiquated name for phenol . </Dd> <Table> Carbonic acid <Tr> <Td_colspan="2"> <Table> <Tr> <Td> </Td> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Th_colspan="2"> Names </Th> </Tr> <Tr> <Td_colspan="2"> Preferred IUPAC name Carbonic acid </Td> </Tr> <Tr> <Td_colspan="2"> Other names Carbon dioxide solution Dihydrogen carbonate Hydrogen bicarbonate Acid of air Aerial acid Hydroxymethanoic acid </Td> </Tr> <Tr> <Th_colspan="2"> Identifiers </Th> </Tr> <Tr> <Td> CAS Number </Td> <Td> <Ul> <Li> 463 - 79 - 6 </Li> </Ul> </Td> </Tr> <Tr> <Td> 3D model (JSmol) </Td> <Td> <Ul> <Li> Interactive image </Li> </Ul> </Td> </Tr> <Tr> <Td> ChEBI </Td> <Td> <Ul> <Li> CHEBI: 28976 </Li> </Ul> </Td> </Tr> <Tr> <Td> ChEMBL </Td> <Td> <Ul> <Li> ChEMBL1161632 </Li> </Ul> </Td> </Tr> <Tr> <Td> ChemSpider </Td> <Td> <Ul> <Li> 747 </Li> </Ul> </Td> </Tr> <Tr> <Td> ECHA InfoCard </Td> <Td> 100.133. 015 </Td> </Tr> <Tr> <Td> EC Number </Td> <Td> 610 - 295 - 3 </Td> </Tr> <Tr> <Td> KEGG </Td> <Td> <Ul> <Li> C01353 </Li> </Ul> </Td> </Tr> <Tr> <Td> PubChem CID </Td> <Td> <Ul> <Li> 767 </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> InChI (show) <Ul> <Li> InChI = 1S / CH2O3 / c2 - 1 (3) 4 / h (H2, 2, 3, 4) Key: BVKZGUZCCUSVTD - UHFFFAOYSA - N </Li> <Li> InChI = 1 / CH2O3 / c2 - 1 (3) 4 / h (H2, 2, 3, 4) Key: BVKZGUZCCUSVTD - UHFFFAOYAU </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> SMILES (show) <Ul> <Li> O = C (O) O </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Properties </Th> </Tr> <Tr> <Td> Chemical formula </Td> <Td> H CO </Td> </Tr> <Tr> <Td> Molar mass </Td> <Td> 62.03 g / mol </Td> </Tr> <Tr> <Td> Density </Td> <Td> 1.668 g / cm </Td> </Tr> <Tr> <Td> Solubility in water </Td> <Td> Only stable in solution </Td> </Tr> <Tr> <Td> Acidity (pK) </Td> <Td> 3.6 (pK for H CO only), 6.3 (pK including CO (aq)), 10.32 (pK) </Td> </Tr> <Tr> <Th_colspan="2"> Related compounds </Th> </Tr> <Tr> <Td> Related compounds </Td> <Td> Acetone Urea Carbonyl fluoride </Td> </Tr> <Tr> <Td_colspan="2"> Except where otherwise noted, data are given for materials in their standard state (at 25 ° C (77 ° F), 100 kPa). </Td> </Tr> <Tr> <Td_colspan="2"> Y verify (what is?) </Td> </Tr> <Tr> <Td_colspan="2"> Infobox references </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> </Tr> </Table> <Tr> <Td_colspan="2"> <Table> <Tr> <Td> </Td> <Td> </Td> </Tr> </Table> </Td> </Tr>

What is the pka value of carbonic acid