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The tetrahydrate Co 3 (PO 4) 2 •4H 2 O precipitates as a solid upon mixing aqueous solutions of cobalt(II) and phosphate salts. [4] [5] Upon heating, the tetrahydrate converts to the anhydrous material. According to X-ray crystallography, the anhydrous Co 3 (PO 4) 2 consists of discrete phosphate (PO 3− 4) anions that link Co 2+ centres.
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Cobalt(II) phosphide is an inorganic compound with the chemical formula Co 3 P 2. [1] References ... This page was last edited on 2 December 2024, at 07:09 (UTC).
Magenta coloured CoCl 2 ·6H 2 O. Many halides of cobalt(II) are known.e cobalt(II) fluoride (CoF 2) which is a pink solid, cobalt(II) chloride (CoCl 2) which is a blue solid, cobalt(II) bromide (CoBr 2) which is a green solid, and cobalt(II) iodide (CoI 2) which is a blue-black solid. In addition to the anhydrous forms, these cobalt halides ...
The second and third pK a 's of phosphoric acid, pK a2 and pK a3, are 7.2 and 12.37, respectively. It follows that HPO 2− 4 and PO 3− 4 are sufficiently basic to serve as ligands. The examples below confirm this expectation. Molecular metal phosphate complexes have no or few applications.
The general formula of a phosphoric acid is H n+2−2x P n O 3n+1−x, where n is the number of phosphorus atoms and x is the number of fundamental cycles in the molecule's structure, between 0 and n + 2 / 2 . Pyrophosphate anion. Trimethyl orthophosphate.
It is relatively commonly encountered as the hydrated species Cu 2 (PO 4)OH, which is green and occurs naturally as the mineral libethenite. Pseudomalachite, Cu 5 (PO 4) 2 (OH) 4, is the most common Cu phosphate in nature, typical for some oxidation zones of Cu ore deposits. [9] [10]
Phosphorus comprises 0.1% by mass of the average rock [12] (while, for perspective, its typical concentration in vegetation is 0.03% to 0.2%), [13] and consequently there are quadrillions of tons of phosphorus in Earth's 3×10 19-ton crust, [14] albeit at predominantly lower concentration than the deposits counted as reserves, which are ...