Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 4
... decomposed either by boiling or by means of a reducing agent . A quantitative method of separating niobic and tantalic acid from all other elements is based upon these properties . This separation is effected as follows : - water . The ...
... decomposed either by boiling or by means of a reducing agent . A quantitative method of separating niobic and tantalic acid from all other elements is based upon these properties . This separation is effected as follows : - water . The ...
Strona 18
... decomposed , cool , add 200 cc . water , 30 cc . strong hydrochloric acid , and about 1 grm . of steel turnings ; heat , and when reduction appears complete , but before the last particles of steel have dissolved , place a two - hole ...
... decomposed , cool , add 200 cc . water , 30 cc . strong hydrochloric acid , and about 1 grm . of steel turnings ; heat , and when reduction appears complete , but before the last particles of steel have dissolved , place a two - hole ...
Strona 19
... decomposed . Cool and dissolve the mass in water , acidify with nitric acid , and filter to clear the solution . The ... Decompose in a platinum dish o 25 grm . of the powdered salt with dilute hydrochloric acid , being careful to ...
... decomposed . Cool and dissolve the mass in water , acidify with nitric acid , and filter to clear the solution . The ... Decompose in a platinum dish o 25 grm . of the powdered salt with dilute hydrochloric acid , being careful to ...
Strona 23
... decomposed by the action of heat 89.84 per cent of the decomposed substance yields dithionate and 10.16 per cent sulphate . In a sealed tube the action of heat must not be continued too long , for then the dithionic acid is decomposed ...
... decomposed by the action of heat 89.84 per cent of the decomposed substance yields dithionate and 10.16 per cent sulphate . In a sealed tube the action of heat must not be continued too long , for then the dithionic acid is decomposed ...
Strona 27
... decomposed , and pre- cipitates of niobic and tantalic acid are formed . D. Analysis of Minerals containing the Acid Earths . We give herewith some analyses of tantalites . We had at our disposal tantalites from Australia and America ...
... decomposed , and pre- cipitates of niobic and tantalic acid are formed . D. Analysis of Minerals containing the Acid Earths . We give herewith some analyses of tantalites . We had at our disposal tantalites from Australia and America ...
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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