Chemical News and Journal of Industrial Science, Tomy 101-102Chemical news office., 1910 |
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Strona 3
... liquid above it is perfectly clear and can be filtered very easily . This precipitate can also be separated particularly well in a Nutschen filter . If the precipitate is washed with water containing ammonia ( one - half per cent ) it ...
... liquid above it is perfectly clear and can be filtered very easily . This precipitate can also be separated particularly well in a Nutschen filter . If the precipitate is washed with water containing ammonia ( one - half per cent ) it ...
Strona 4
... liquid ( if all the sulphur trioxide has volatilised owing to fusing too long , it is necessary to make it strongly acid with sulphuric acid ) some sulphurous acid is added till the liquid smells strongly of it , and it is then warmed ...
... liquid ( if all the sulphur trioxide has volatilised owing to fusing too long , it is necessary to make it strongly acid with sulphuric acid ) some sulphurous acid is added till the liquid smells strongly of it , and it is then warmed ...
Strona 5
... liquid quite clear . Thus sulphurous acid is added drop by drop , meanwhile stirring , to the warmed liquid till the precipitate settles ; the liquid is not heated to boiling , but at the most only just to the boiling - point , because ...
... liquid quite clear . Thus sulphurous acid is added drop by drop , meanwhile stirring , to the warmed liquid till the precipitate settles ; the liquid is not heated to boiling , but at the most only just to the boiling - point , because ...
Strona 14
... liquid is avoided , and much time is saved . As we have said , after filtering it is found that the filtrate contains only very little titanium . If sulphuretted hydrogen gas is led into the filtrate in the cold , a greyish white ...
... liquid is avoided , and much time is saved . As we have said , after filtering it is found that the filtrate contains only very little titanium . If sulphuretted hydrogen gas is led into the filtrate in the cold , a greyish white ...
Strona 15
... liquid state covered the bottom of a fairly large platinum crucible to a depth of about 2 cm . without any ... liquid melt usually looks rather dark owing to the separation of carbon . When frothing has ceased the mixture of acids is ...
... liquid state covered the bottom of a fairly large platinum crucible to a depth of about 2 cm . without any ... liquid melt usually looks rather dark owing to the separation of carbon . When frothing has ceased the mixture of acids is ...
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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