Chemical News and Journal of Physical Science, Tom 105Chemical news office., 1912 |
Z wnętrza książki
Wyniki 1 - 5 z 67
Strona 3
... 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 with a N / 10 solution of potassium dichromate ...
... 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 with a N / 10 solution of potassium dichromate ...
Strona 9
... washed with a solution of sodium hydroxide until free from acid . Myristic acid ( 125 grms . ) was recovered from the washings , mixed afresh with glacial acetic acid , and again treated . When the products from the two opera- tions ...
... washed with a solution of sodium hydroxide until free from acid . Myristic acid ( 125 grms . ) was recovered from the washings , mixed afresh with glacial acetic acid , and again treated . When the products from the two opera- tions ...
Strona 14
... washed out with hydrogen gas . Overheating of the thermostat expands the gas , and causes the mercury surface , B , to be F C C www D E D A B B H FIG . I. FIG . 2 . forced away from the platinum wire , thus cutting off the current . The ...
... washed out with hydrogen gas . Overheating of the thermostat expands the gas , and causes the mercury surface , B , to be F C C www D E D A B B H FIG . I. FIG . 2 . forced away from the platinum wire , thus cutting off the current . The ...
Strona 16
... washed , and purified by re - crystallising several times from alcohol . As thus obtained , the body was a hard waxy mass , melting at 68 ° C. , and having a specific gravity of 0.780 at its melting - point . It was readily soluble in ...
... washed , and purified by re - crystallising several times from alcohol . As thus obtained , the body was a hard waxy mass , melting at 68 ° C. , and having a specific gravity of 0.780 at its melting - point . It was readily soluble in ...
Strona 17
... washed , and treated while still moist with boiling 95 per cent alcohol , a portion of the precipitate goes into solution . The amount of the humus precipitate so dissolved varies with the cha- racter of the soil treated , but the ...
... washed , and treated while still moist with boiling 95 per cent alcohol , a portion of the precipitate goes into solution . The amount of the humus precipitate so dissolved varies with the cha- racter of the soil treated , but 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