Chemical News and Journal of Physical Science, Tom 105Chemical news office., 1912 |
Z wnętrza książki
Wyniki 1 - 5 z 83
Strona 3
... precipitate was then filtered off , thoroughly washed with water , dissolved in hydrochloric acid , precipitated with ammonium hydrate after oxidation , and weighed as oxide , or the hydrochloric acid solution was reduced and titrated ...
... precipitate was then filtered off , thoroughly washed with water , dissolved in hydrochloric acid , precipitated with ammonium hydrate after oxidation , and weighed as oxide , or the hydrochloric acid solution was reduced and titrated ...
Strona 12
... precipitate is obtained . If sodium is used the precipitate is Na3Bi ; it is insoluble in excess of sodium at the temperature of boiling paraffin , Browning and Philip L. Blumenthal . - When the double sulphates of the alkalis and the ...
... precipitate is obtained . If sodium is used the precipitate is Na3Bi ; it is insoluble in excess of sodium at the temperature of boiling paraffin , Browning and Philip L. Blumenthal . - When the double sulphates of the alkalis and the ...
Strona 15
... precipitate is then dissolved very readily . A large excess of acetic acid is to be avoided , as it tends to make the result too low , which is also the experience of of Mr. L. D. Havenhill of the committee . The best results were ...
... precipitate is then dissolved very readily . A large excess of acetic acid is to be avoided , as it tends to make the result too low , which is also the experience of of Mr. L. D. Havenhill of the committee . The best results were ...
Strona 16
... precipitate which after separation and washing was in the form of a brown resinous powder . Extraction of this with boiling petroleum ether yielded a light coloured solution , which after removal of the petroleum ether left a light ...
... precipitate which after separation and washing was in the form of a brown resinous powder . Extraction of this with boiling petroleum ether yielded a light coloured solution , which after removal of the petroleum ether left a light ...
Strona 17
... precipitate of the so - called humus bodies is formed . If this precipitate is separated by filtration , washed , and treated while still moist with boiling 95 per cent alcohol , a portion of the precipitate goes into solution . The ...
... precipitate of the so - called humus bodies is formed . If this precipitate is separated by filtration , washed , and treated while still moist with boiling 95 per cent alcohol , a portion of the precipitate goes into solution . The ...
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
acetic acid action added alcohol alkali alloys aluminium ammonia ammonium amount Analysis APPARATUS atom barium boiling bromine carbon cent cerium Chem CHEMICAL NEWS Office Chemistry chemists chloride chromium CLERKENWELL ROAD colour compounds containing copper creatinine crucible crystallises crystals D.Sc decomposition described determined dilute dioxide dissolved Edition electric electrolytic ester ether ethyl experiments extract Farringdon Street ferric filtered filtrate flask formaldehyde gives gliadin graphite heat hydrate hydrochloric acid hydrogen hydroxide iodide iodine iron Laboratory lead liquid London melting melting-point mercury metal method mgrm mixture molecular molecules Newcastle Street nitric acid nitrogen obtained oxide oxidised oxygen paper phenol Physical platinum potassium precipitate prepared present Price Prof pure quantity radium reaction residue salts samples Sir William Crookes Society sodium sodium hydroxide soil soluble solution substance sulphate sulphide sulphuric acid temperature tion titration tube vanadium volume washed weight Yeast zinc