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Atomistry » Platinum » Chemical Properties » Ammonium Chlor-platinate | ||||||||
Atomistry » Platinum » Chemical Properties » Ammonium Chlor-platinate » |
Ammonium Chlor-platinate, (NH4)2PtCl6
Ammonium Chlor-platinate, (NH4)2PtCl6, is closely similar in appearance to the potassium salt, with which it is isomorphous. It crystallises in regular octahedra.
The solubility of ammonium chlor-platinate in water at various temperatures is as follows:
When heated, ammonium chlor-platinate decomposes in accordance with the equation: 3(NH4)2PtCl6 = 3Pt + 16HCl + 2NH4Cl + 2N2, the metal being left behind as a dull grey, soft and porous mass known as spongy platinum or platinum sponge. The density of the salt is 3.034. |
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