Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 3
... filter it owing to the form in which it separates . These difficulties are easily overcome if the acid is neutralised with ammonia in very slight excess . When precipitated whilst warm the niobic acid is rapidly deposited in beautiful ...
... filter it owing to the form in which it separates . These difficulties are easily overcome if the acid is neutralised with ammonia in very slight excess . When precipitated whilst warm the niobic acid is rapidly deposited in beautiful ...
Strona 14
... filter , settles , and finally filters well . The precipitate must be washed with sodium polysulphide solution . The two titanium precipitates - metatitanate and sul- phuretted hydrogen precipitate - are treated on the filter with warm ...
... filter , settles , and finally filters well . The precipitate must be washed with sodium polysulphide solution . The two titanium precipitates - metatitanate and sul- phuretted hydrogen precipitate - are treated on the filter with warm ...
Strona 16
... filter as possible . The precipitate was washed with cold dilute sulphurous acid till the filtrate gave no yellow coloration with hydrogen peroxide . The precipitate when treated with sulphuric acid + hydrogen peroxide gave a distinct ...
... filter as possible . The precipitate was washed with cold dilute sulphurous acid till the filtrate gave no yellow coloration with hydrogen peroxide . The precipitate when treated with sulphuric acid + hydrogen peroxide gave a distinct ...
Strona 18
... filter through asbestos , wash the pre- cipitate of Cu2O with water , dissolve in nitric acid , catching the copper solution in a 200 cc . flask , and determine copper by any good volumetric method . We have found that equally good ...
... filter through asbestos , wash the pre- cipitate of Cu2O with water , dissolve in nitric acid , catching the copper solution in a 200 cc . flask , and determine copper by any good volumetric method . We have found that equally good ...
Strona 19
... filter to clear the solution . The chlorine can then be determined by titrating with a standard solution of silver nitrate ; or it may be precipitated with silver nitrate and determined in the gravimetric way . Determination of ...
... filter to clear the solution . The chlorine can then be determined by titrating with a standard solution of silver nitrate ; or it may be precipitated with silver nitrate and determined in the gravimetric way . Determination of ...
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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