Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 3
... excess of the alkali . Sodium carbonate also readily dissolves both acids when they are freshly precipitated , and keeps them in solution even when present in large excess . Tantalic acid dissolves less easily than niobic acid . Sodium ...
... excess of the alkali . Sodium carbonate also readily dissolves both acids when they are freshly precipitated , and keeps them in solution even when present in large excess . Tantalic acid dissolves less easily than niobic acid . Sodium ...
Strona 7
... excess followed by a large excess of sodium hydroxide . The sodium hydroxide retains the vanadium in solution , but leaves the iron and uranium undissolved . This precipitate , after washing , is dissolved in hot dilute nitric acid ...
... excess followed by a large excess of sodium hydroxide . The sodium hydroxide retains the vanadium in solution , but leaves the iron and uranium undissolved . This precipitate , after washing , is dissolved in hot dilute nitric acid ...
Strona 8
... excess the tendency to re - oxidise is harder to overcome , and the results show more variation . To apply this method to a carnotite ore the manipulation would be as follows : - 0'3 to 0.5 grm . of the ore is dissolved in an Erlenmeyer ...
... excess the tendency to re - oxidise is harder to overcome , and the results show more variation . To apply this method to a carnotite ore the manipulation would be as follows : - 0'3 to 0.5 grm . of the ore is dissolved in an Erlenmeyer ...
Strona 9
... excess of sodium carbonate added , after which it is boiled , filtered , and washed . The combined filtrates and wash- waters are acidified with sulphuric acid , and an excess of the acid added amounting to 2 to 5 cc . of the ...
... excess of sodium carbonate added , after which it is boiled , filtered , and washed . The combined filtrates and wash- waters are acidified with sulphuric acid , and an excess of the acid added amounting to 2 to 5 cc . of the ...
Strona 14
... excess of sulphuretted hydrogen , acidified with sulphuric acid , and tested for any titanium present with hydrogen peroxide . If the sulphuretted hydrogen has been led in for long enough there is never any fear that titanium is still ...
... excess of sulphuretted hydrogen , acidified with sulphuric acid , and tested for any titanium present with hydrogen peroxide . If the sulphuretted hydrogen has been led in for long enough there is never any fear that titanium is still ...
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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