Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 3
... sodium niobate by a large 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 ...
... sodium niobate by a large 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 ...
Strona 7
... sodium carbonate added in 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 ...
... sodium carbonate added in 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 ...
Strona 9
... 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 concentrated acid ...
... 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 concentrated acid ...
Strona 14
... sodium nitrate ( not potassium nitrate ) are thrown in , at the most enough to cover the tip of a knife - blade ; the melt is again covered , and heated with a long blowpipe flame , so that it touches the edge of the lid , for eight or ...
... sodium nitrate ( not potassium nitrate ) are thrown in , at the most enough to cover the tip of a knife - blade ; the melt is again covered , and heated with a long blowpipe flame , so that it touches the edge of the lid , for eight or ...
Strona 27
... sodium tantalate is filtered off , washed with warm sodium bicarbonate solution , dissolved in sul- phuric acid containing hydrogen peroxide , and precipitated as Ta ( OH ) , with sulphurous acid . Into the filtrate , which contains all ...
... sodium tantalate is filtered off , washed with warm sodium bicarbonate solution , dissolved in sul- phuric acid containing hydrogen peroxide , and precipitated as Ta ( OH ) , with sulphurous acid . Into the filtrate , which contains all ...
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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