The book Smaller Chemical Analysis was written by author George S Newth Here you can read free online of Smaller Chemical Analysis book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Smaller Chemical Analysis a good or bad book?
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H 2 S only produces complete precipitation of NiS from a warm solution of the acetate, or from other nickel salts in the presence of an alkaline acetate. In the case of neutral solutions of nickel salts with mineral acids, the precipitation is only partial, while in acid solutions it does not take place at all. KCy gives a pale-green precipitate of nickelous cyanide, 48 Smaller Chemical Analysis NiCy 2, readily soluble in excess of the reagent forming the double cyanide, K 2 NiCy 4 . From this ...solution (NH 4 ) 2 S fails to precipitate the sulphide. Dilute mineral acids cause the reprecipitation of nickelous cyanide K 2 NiCy 4 + 2HC1 = 2 KC1 + 2HCy + NiCy 2 Boiling with hydrochloric acid decomposes the metallic cyanide altogether K 2 NiCy 4 + 4HC1 = 2KC1 + 4HCy + NiCl 2 Oxidising agents, such as hypochlorites, chlorine, or bromine precipitate the black hydrated sesquioxide. (Distinction from cobalt. } 2 K 2 NiCy 4 + NaCIO + 5H 2 O = Ni 2 O 3, 3H 2 O + NaCl + 4 KCy Cobalt, Co DRY REACTIONS.
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