Search results
Results From The WOW.Com Content Network
2 (NH 4) 2 HPO 4 + 3 CuO → Cu 3 (PO 4) 2 + 3 H 2 O + 4 NH 3 In laboratories, copper phosphate is prepared by the addition of phosphoric acid to an alkali copper salt such as copper hydroxide, or basic copper carbonate. 3 Cu(OH) 2 + 2 H 3 PO 4 → 6 H 2 O + Cu 3 (PO 4) 2 3 Cu 2 (OH) 2 CO 3 + 4 H 3 PO 4 → 2 Cu 3 (PO 4) 2 + 3 CO 2 + 9 H 2 O
Copper phosphide, Cu 3 P, also copper(I) phosphide, cuprous phosphide, cuprophosphorus and phosphor copper, is a compound of copper and phosphorus, a phosphide of copper. It has the appearance of yellowish-grey very brittle mass of crystalline structure.
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.
The molar mass of atoms of an element is given by the relative atomic mass of the element multiplied by the molar mass constant, M u ≈ 1.000 000 × 10 −3 kg/mol ≈ 1 g/mol. For normal samples from Earth with typical isotope composition, the atomic weight can be approximated by the standard atomic weight [ 2 ] or the conventional atomic weight.
CuO + 2 HNO 3 → Cu(NO 3) 2 + H 2 O CuO + 2 HCl → CuCl 2 + H 2 O CuO + H 2 SO 4 → CuSO 4 + H 2 O. In presence of water it reacts with concentrated alkali to form the corresponding cuprate salts: 2 NaOH + CuO + H 2 O → Na 2 [Cu(OH) 4] It can also be reduced to copper metal using hydrogen, carbon monoxide, and carbon: CuO + H 2 → Cu + H ...
The molar mass constant, usually denoted by M u, is a physical constant defined as one twelfth of the molar mass of carbon-12: M u = M(12 C)/12. [1] The molar mass of an element or compound is its relative atomic mass (atomic weight) or relative molecular mass (molecular weight or formula weight) multiplied by the molar mass constant.
12 (NH 4) 6 Mo 7 O 24 (H 2 O) 4 + 7 Na 2 HPO 4 (H 2 O) + 65 HNO 3 → 7 (NH 4) 3 Mo 12 PO 40 + 51 NH 4 NO 3 + 14 NaNO 3 + 91 H 2 O. Normally, it often exists as a hexahydrate, a dark yellow fine crystal which is poorly soluble in water. [3] It is also obtained as a test result for phosphate ions.
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.