HoppeSeyler, based primarily on solubilities and distribution, may be conveniently retained.
The various solubilities are shown in the following table: -
It is then dissolved in hydrofluoric acid and heated in order to expel silicon fluoride; finally the columbium, tantalum and titanium fluorides are separated by the different solubilities of their double fluorides (C. Marignac, Ann.
In order to separate caesium from rubidium, use is made of the different solubilities of their various salts.
The liquors are evaporated to dryness and the residue is ignited to obtain a very impure carbonate, which is purified by methods founded on the different solubilities of the several components.
The solubilities of solids may be expressed in terms of the mass of solute which will dissolve in loo grammes of water.
Comey, Dictionary of Solubilities (Inorganic) (1896); A.
Seidell, Dictionary of the Solubilities of Inorganic and Organic Substances (1907).
1902), under Ramsay's direction, for comparing solubilities which are in many respects analogous to vapour-pressures.
The best source of rubidium salts is the residue left after extracting lithium salts from lepidolite, the method of separation being based on the different solubilities of the platino-chlorides of potassium, rubidium and caesium in water (R.
The two products are separated by the different solubilities of their sulphates.