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| 1. |
Formula of pyrophosphoric Acid |
| Answer» Pyrophosphoric acid, also known as diphosphoric acid, is the inorganic compound with the formula H₄P₂O₇ or, more descriptively, [(HO)₂P]₂O. Colorless and odorless, it is soluble in water, diethyl ether, and ethyl alcohol.\xa0Hypophosphoric acid\xa0is a mineral\xa0acid\xa0with the formula H4P2O6, with phosphorus in a formal oxidation state of +4. In the solid state it is present as the dihydrate, H4P2O6·2H2O. In\xa0hypophosphoric acid\xa0the phosphorus atoms are identical and joined directly with a P−P bond. | |