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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
It has the appearance of yellowish-grey very brittle mass of crystalline structure. It does not react with water. Recent crystallographic investigations have proven Cu 3 P to be copper deficient, which means that the sum formula of this compound is more accurately expressed as Cu 3−x P. [ 4 ]
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 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.
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
Chevreul's salt is a representative member of an isomorphic series of double salts with formulae Cu 2 SO 3 •FeSO 3 •2H 2 O, Cu 2 SO 3 •MnSO 3 •2H 2 O, and Cu 2 SO 3 •CdSO 3 •2H 2 O. The properties of these salts show the effect of ionic radius and ion hardness. [8] Another analogue, Cu 2 SO 3 •NiSO 3 •2H 2 O, is brick-red in ...
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.
Copper arsenate (Cu 3 (AsO 4) 2 ·4H 2 O, or Cu 5 H 2 (AsO 4) 4 ·2H 2 O), also called copper orthoarsenate, tricopper arsenate, cupric arsenate, or tricopper orthoarsenate, is a blue or bluish-green powder insoluble in water and alcohol and soluble in aqueous ammonium and dilute acids.