Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 2
... containing them more easily and accurately , and to obtain the acids themselves by a more convenient method . Thus tantalum is used for the filaments of electric lamps , for current rectifiers , for the construction of useful objects ...
... containing them more easily and accurately , and to obtain the acids themselves by a more convenient method . Thus tantalum is used for the filaments of electric lamps , for current rectifiers , for the construction of useful objects ...
Strona 3
... containing ammonia ( one - half per cent ) it is perfectly free from sulphuric acid after the first ignition . Precipitated niobic , tantalic , or titanic acid must never be washed with pure water , for the liquid always goes through ...
... containing ammonia ( one - half per cent ) it is perfectly free from sulphuric acid after the first ignition . Precipitated niobic , tantalic , or titanic acid must never be washed with pure water , for the liquid always goes through ...
Strona 4
... containing niobic acid is evaporated , when it is sufficiently concentrated , beautiful very silky- looking asbestos - like threads are formed ; these dissolve both in oxalic acid and in water . They are double com- pounds of niobic or ...
... containing niobic acid is evaporated , when it is sufficiently concentrated , beautiful very silky- looking asbestos - like threads are formed ; these dissolve both in oxalic acid and in water . They are double com- pounds of niobic or ...
Strona 7
... containing a little ammonium nitrate . The vanadium , in acid solution , is reduced with sulphur dioxide , and the uranium with zinc and sulphuric acid , after which each is titrated with standard permanganate . A second method is that ...
... containing a little ammonium nitrate . The vanadium , in acid solution , is reduced with sulphur dioxide , and the uranium with zinc and sulphuric acid , after which each is titrated with standard permanganate . A second method is that ...
Strona 16
... containing two parts of acid to one part of water . All three acids behaved in exactly the same way . Titanic acid is completely dissolved on heating with concentrated sulphuric acid , the solution remains quite clear when poured into ...
... containing two parts of acid to one part of water . All three acids behaved in exactly the same way . Titanic acid is completely dissolved on heating with concentrated sulphuric acid , the solution remains quite clear when poured into ...
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acetic acid action alcohol alkaline aluminium ammonia ammonium amount analysis apparatus atomic weight B.Sc barium boiling bromide calcium calculated carbon dioxide cent Chem chemical Chemistry chemists chloride colour comet compounds concentrated condensation containing copper crystalline D.Sc decomposed derivatives determination dilute dissolved distilled ether ethyl evaporated excess experiments filter filtrate flask formed formula gives gold grms heated hydrochloric acid hydrogen hydroxide invertase iodide iodine iron J. J. Thomson ketone liquid melting metal method mgrms mineral mixture molecular molecules muriatic niobic nitrate nitric acid obtained oxide oxidised oxygen paper perchloric acid permanganate phosphorus platinum potassium precipitate prepared present Prof pure quantity reaction reduced residue salt sample scandium silver phosphate Society sodium sodium carbonate soluble substance sugar sulphate sulphide sulphuric acid tantalic acid tantalum telluride tellurium temperature theory tion titanic acid titanium tube vanadium vapour washed ytterbium zinc