States of phosphate ion in aqueous solution at neutral pH
| Range | 62% HPO42− and 38% H2PO4− % |
|---|---|
| Organism | Unspecified |
| Reference | Orij R, Brul S, Smits GJ. Intracellular pH is a tightly controlled signal in yeast. Biochim Biophys Acta. 2011 Mar 21 3rd page left column 3rd paragraphPubMed ID21421024 |
| Comments | The phosphate ion has 3 pKa values (2.1, 7.2, and 12.7) and can exist in 4 different states in aqueous solution (PO43-, HPO42-, H2PO4- and H3PO4). At neutral pH, only HPO42- (62%) and H2PO4- (38%) are present in significant amounts. |
| Entered by | Uri M |
| ID | 106514 |