|
Atomistry » Gold » Chemical Properties » Salts of Auricyanic Acid | ||
Atomistry » Gold » Chemical Properties » Salts of Auricyanic Acid » |
Salts of Auricyanic Acid
The free acid has not been prepared, as it decomposes as indicated under auric cyanide. Potassium auricyanide, 2KAu(CN)4,3H2O, is obtained in colourless crystals by the action of auric chloride on potassium cyanide in aqueous solution. It is readily soluble in water. At 200° C. all the water of crystallization is eliminated, the salt being converted into potassium aurocyanide, KAu(CN)2. Ammonium auricyanide, NH4Au(CN)4,H2O, is produced by evaporating a solution of auric hydroxide in ammonium cyanide. It forms large plates, readily soluble in water. At 100° C. the water of crystallization is expelled, and at higher temperatures the salt decomposes. The silver salt is produced as a yellowish precipitate, sensitive to light, by the action of silver nitrate on potassium auricyanide. It is readily soluble in ammonia, and much less readily in nitric acid. A cobaltous auricyanide, Co(Au(CN)4)2,9H2O, and a number of complex salts have been prepared.
|
Last articlesCl in 6COGCl in 6CST Cl in 6CTW Cl in 6CTZ Cl in 6CTT Cl in 6CSP Cl in 6CU9 Cl in 6CTX Cl in 6CTU Cl in 6CTP |
© Copyright 2008-2020 by atomistry.com | ||
Home | Site Map | Copyright | Contact us | Privacy |