Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 7
... reducing with zinc . The filtrate from the uranium phosphate is acidified with sulphuric acid , the vanadium reduced with sulphur dioxide , and titrated , like the uranium , with a standard solution of potassium permanganate . A third ...
... reducing with zinc . The filtrate from the uranium phosphate is acidified with sulphuric acid , the vanadium reduced with sulphur dioxide , and titrated , like the uranium , with a standard solution of potassium permanganate . A third ...
Strona 8
... reduce than iron , and since vanadium is much more easily reduced than iron , any agent tried which completely reduced the uranium was found to reduce the vanadium to such a low state of oxidation that re - oxidation by the air took ...
... reduce than iron , and since vanadium is much more easily reduced than iron , any agent tried which completely reduced the uranium was found to reduce the vanadium to such a low state of oxidation that re - oxidation by the air took ...
Strona 9
... reduced the solution is boiled and a rapid current of carbon dioxide passed through the boiling solution to expel ... reduced solutions in the test - tube minus three times the number of cc . used in the titration after reduction with ...
... reduced the solution is boiled and a rapid current of carbon dioxide passed through the boiling solution to expel ... reduced solutions in the test - tube minus three times the number of cc . used in the titration after reduction with ...
Strona 13
... reduced the solution with zinc , and titrated the reduced solution with potassium permanganate . As titanic acid is reduced first , the amount of titanium present in the niobic acid can be determined if the directions given by the ...
... reduced the solution with zinc , and titrated the reduced solution with potassium permanganate . As titanic acid is reduced first , the amount of titanium present in the niobic acid can be determined if the directions given by the ...
Strona 14
... reduction is likely to occur ; to re- oxidise reduced titanic , niobic , or tantalic acid is very difficult and tedious . These reduced oxides are blue - black or black in colour , and are not again oxidised to the white oxides readily ...
... reduction is likely to occur ; to re- oxidise reduced titanic , niobic , or tantalic acid is very difficult and tedious . These reduced oxides are blue - black or black in colour , and are not again oxidised to the white oxides readily ...
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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