Cobalt Nickel And the Elements of the Platinum Group
The book Cobalt Nickel And the Elements of the Platinum Group was written by author J Newton John Newton Friend Here you can read free online of Cobalt Nickel And the Elements of the Platinum Group book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Cobalt Nickel And the Elements of the Platinum Group a good or bad book?
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Several methods of separating palladium from the platinum metals are given in Chapter X. Of these an interesting one consists in precipitating the metal as iodide by addition of potassium iodide 7 to a solution containing a soluble palladium salt. To obtain the free metal See Hussak, Chem. Zentr. , 1905, ii, 107. Seamon, Chem. News, 1882, 46, 216. Zinken, Pogg. Annalen, 1829, 16, 491 ; Ann. Chim. Phys. , 1830, 44, 206. Wollaston, Phil. Trans. , 1804, p. 419 ; 1805, p. 316. See Lockyer, Compt. R...end. , 1878, 86, 317. Trottarelli, Gazzetta, 1890, 20, 611. Addition of freshly precipitated silver iodide instead of potassium iodide is recom- mended by Orloff, Chem. Zeit. , 1906, 30, 714. 174 PALLADIUM AND ITS COMPOUNDS 175 the iodide is ignited in air, the last traces of iodine being- removed by heating in a current of hydrogen. By this method Bunsen 1 isolated pure palladium from residues from the Russian Mint at Petrograd, the residues containing a mixture of all the platinum metals. A convenient method consists in precipitating palladium from solution as palladous cyanide by addition of mercuric cyanide.
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