arthur kierski
Well-known member
a iridum solution will give what collor with a stanous chloride test?this iridium comes from spark plugs----thanks for any reply
Arthur----
Arthur----
Qualitative Chemical Analysis said:5. Solubility-Freshly precipitated iridium may be dissolved in nitro-hydrochloric acid. The ignited metal is insoluble in all acids. Its proper solvent is chlorine. Iridium tri-chloride, IrCl3, is soluble in water and forms with the alkali chlorides double chlorides, soluble in water, insoluble in alcohol. The tetrachloride with sodium chloride, Na2IrCl4, is formed when the platinum residues mixed with NaCl are heated in a current of chlorine. It is soluble in water. The corresponding ammonium salt may be formed from the sodium salt by precipitation from the concentrated solution with NH4Cl, a reddish brown precipitate, soluble in 20 parts of water (Vauquelin, A. Ch., 1806, 59, 150 and 225). The potassium double salt is sparingly soluble in water.
6. Reactions-Fixed alkali hydroxides or carbonates precipitate from boiling solutions of iridium chloride, IrCl3 or IrCl4, iridium hydroxide, Ir(OH)4, dark blue, insoluble in all acids except HCl. Potassium nitrite added to a hot solution of iridium salts gives, first a yellow color and finally a yellow precipitate, insoluble in water or acids. Hydrogen sulfide reduces IrCl4 to IrCl3, and then precipitates the tri-sulfide, Ir2S3, brown, soluble in alkali sulfides.
If you manage to do that please send me results. [email protected]Arthur,
I hope this helps.
I'm working on putting together some Ir tests and photos of the results.
Steve
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