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Nickel(II) sulfate is produced in large amounts by dissolving nickel metal or oxides in sulfuric acid, forming both a hexa- and heptahydrate [46] useful for electroplating nickel. Common salts of nickel, such as chloride, nitrate, and sulfate, dissolve in water to give green solutions of the metal aquo complex [Ni(H 2 O) 6] 2+. [47]
Nickel(II) sulfate, or just nickel sulfate, usually refers to the inorganic compound with the formula NiSO 4 (H 2 O) 6. This highly soluble turquoise coloured salt is a common source of the Ni 2+ ion for electroplating .
As a mineral the ammonium nickel salt, (NH 4) 2 Ni(SO 4) 2 · 6 H 2 O, can be called nickelboussingaultite. [2] With sodium, the double sulfate is nickelblödite Na 2 Ni(SO 4) 2 · 4 H 2 O from the blödite family. Nickel can be substituted by other divalent metals of similar sized to make mixtures that crystallise in the same form. [3]
The heptahydrate crystallises from water below 31.5 above this blue hexhydrate forms, and above 53.3 the green form. [3] Heating nickel sulfate dehydrates it, and then 700° it loses sulfur trioxide, sulfur dioxide and oxygen. Nickel sulfite can be formed by bubbling sulfur dioxide through nickel carbonate suspended in water. A solution is ...
Black nickel tetrasulfide NiS 4 is formed from ammonium polysulfide and nickel in water solution. Mixed and double sulfides of nickel also exist. Nickel with selenium forms several compounds Ni 1−x Se 0≤x≤0.15, Ni 2 Se 3, NiSe 2 also known as a mineral penroseite. Nickel forms two different polonides by heating nickel and polonium ...
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.
Netflix’s NFL debut kicked off on Christmas Day without a glitch. Mariah Carey opened Wednesday’s doubleheader with a taped performance of “All I Want for Christmas is You” before Patrick ...
The first periodatonickalates discovered were sodium nickel periodate (NaNiIO 6 ·0.5H 2 O) and potassium nickel periodate (KNiIO 6 ·0.5H 2 O). P. Ray and B. Sarma obtained these dark purple double salts in 1949, mixing nickel sulfate with potassium or sodium periodate and (as oxidant) a boiling aqueous solution of an alkali persulfate ...