Silver ammine salt solution

Reagent Silver ammine salt solution A saturated solution of silver nitrate is treated with concentrated ammonia until the initial precipitate is dissolved an equal volume of ammonia is then added. 

The resolution was carried out by means of d-bromo-camphor-sulphonie acid. The salts of the bromo-series are more easily resolved on account of the great difference between the isomeric d-bromo-camphor sulphonates. In both series the d-bromo-eamphor sulphonate of the d-isomer is more sparingly soluble. These active compounds are very stable, and aqueous solutions of the bromides of the bromo-ammine series may be kept for a considerable time at ordinary temperatures, and even on heating to boiling racemisation does not occur. If the bromine in the complex be removed by means of silver nitrate activity... 

Osmyl Tetra-ammine Hydroxide, 0s02(NH3)4(0H)2, is obtained by double decomposition of its sulphate with barium hydroxide,4 or of its chloride with moist silver oxide.5 The solution is not stable, and on concentration ammonia is evolved. The most important salt of this base is... 

B. M. Tassaert noticed that a solution of a cobalt salt in ammonia becomes brown on exposure to air, the colour changing to wine-red on boiljhg, and Thenard in 1802 showed that oxygen is absorbed. Fremy and others showed that the cobalt becomes tervalent and the salt is associated with up tjo a maximum of six ammonia molecules, e.g. CoC NHs). Similar compounds, now called ammines, are formed by platinous and platinic salts, and in many cases there are isomers of particular compounds. In most cases their reactions are abnormal, the compounds not showing the qualitative tests for the metal and sometimes not for the acid radical, e.g., in CrC NHa), only two, atoms of chlorine are precipitated by silver nitrate. Water or organic amihes or bases such as pyridine, may replace ammonia. 

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