Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 5
... flask , which should have been removed from the outer flask , and be entirely cool . If the sample is noticeably charged with carbon dioxide , pass through it a current of air for a few minutes by attaching to the flask a stopper ...
... flask , which should have been removed from the outer flask , and be entirely cool . If the sample is noticeably charged with carbon dioxide , pass through it a current of air for a few minutes by attaching to the flask a stopper ...
Strona 6
... flask , washing from four to six times . In a number of cases tried the boiling with water could be omitted and replaced by the simpler addition of hot water and a thorough stirring . Occasionally the first runnings of the filtrate are ...
... flask , washing from four to six times . In a number of cases tried the boiling with water could be omitted and replaced by the simpler addition of hot water and a thorough stirring . Occasionally the first runnings of the filtrate are ...
Strona 7
... flask containing a ferric salt . The solution of highly reduced vanadium reduces the ferric iron to the ferrous condition , and the amount of reduced iron present registers the reduction of the vanadium . The solution is then titrated ...
... flask containing a ferric salt . The solution of highly reduced vanadium reduces the ferric iron to the ferrous condition , and the amount of reduced iron present registers the reduction of the vanadium . The solution is then titrated ...
Strona 8
... flask at a temperature of 80 ° . Operating in this way the following results were obtained , using 5 cc . uranyl sulphate solution and 5 cc . vanadyl sulphate solution : - Cc . Twentieth - normal Permanganate . 18.39 18.49 18.34 18.59 ...
... flask at a temperature of 80 ° . Operating in this way the following results were obtained , using 5 cc . uranyl sulphate solution and 5 cc . vanadyl sulphate solution : - Cc . Twentieth - normal Permanganate . 18.39 18.49 18.34 18.59 ...
Strona 9
... flask near the end of the titration , and the titration completed as if the reduction had been carried on in one tube . From this point on the procedure is the same as in the reduction of the mixtures of the pure salts described above ...
... flask near the end of the titration , and the titration completed as if the reduction had been carried on in one tube . From this point on the procedure is the same as in the reduction of the mixtures of the pure salts described above ...
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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