Chemical News and Journal of Industrial Science, Tomy 131-132Chemical news office., 1925 |
Z wnętrza książki
Wyniki 1 - 5 z 100
Strona 17
... coloured salt . The first and third of these general methods are employed in the scheme of analysis . The conversion of ... colour comparison . Lead sulphide precipitated with the concentration of 0.002 grams per fifty cc . of solution ...
... coloured salt . The first and third of these general methods are employed in the scheme of analysis . The conversion of ... colour comparison . Lead sulphide precipitated with the concentration of 0.002 grams per fifty cc . of solution ...
Strona 18
... colour , cool and dilute with a few cc . of cold distilled water and transfer to a 4 - inch casserole or silica dish . Evaporate to removal of SO , fumes to in- sure complete destruction of organic matter and removal of excess of ...
... colour , cool and dilute with a few cc . of cold distilled water and transfer to a 4 - inch casserole or silica dish . Evaporate to removal of SO , fumes to in- sure complete destruction of organic matter and removal of excess of ...
Strona 19
... colour test worthless . Amounts of iron exceeding 0.0002 gram per 50 cc . of It was found that samples containing more solution , although reduced to the ferrous condition and in the presence of KCN , give a decided colour with the ...
... colour test worthless . Amounts of iron exceeding 0.0002 gram per 50 cc . of It was found that samples containing more solution , although reduced to the ferrous condition and in the presence of KCN , give a decided colour with the ...
Strona 20
... colour test gave accurate results . is Copper . The sulphate of copper soluble and can be easily removed from the lead residue by the dilute sulphuric acid treatment . The presence of lead in the final solution containing lead would ...
... colour test gave accurate results . is Copper . The sulphate of copper soluble and can be easily removed from the lead residue by the dilute sulphuric acid treatment . The presence of lead in the final solution containing lead would ...
Strona 21
... colour of the mixture to brownish - red . A stirring was continued for some until all the hystazarin disappeared . was then sinall portion of the mixture placed under a microscope and a drop of glacial acetic acid added . When no yellow ...
... colour of the mixture to brownish - red . A stirring was continued for some until all the hystazarin disappeared . was then sinall portion of the mixture placed under a microscope and a drop of glacial acetic acid added . When no yellow ...
Spis treści
10 | |
32 | |
35 | |
44 | |
57 | |
84 | |
100 | |
108 | |
180 | |
182 | |
188 | |
195 | |
215 | |
233 | |
302 | |
327 | |
334 | |
337 | |
342 | |
344 | |
350 | |
360 | |
381 | |
383 | |
393 | |
395 | |
424 | |
426 | |
427 | |
2 | |
130 | |
132 | |
142 | |
148 | |
159 | |
164 | |
164 | |
180 | |
215 | |
224 | |
228 | |
241 | |
248 | |
264 | |
278 | |
291 | |
292 | |
297 | |
325 | |
338 | |
356 | |
370 | |
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
acid action addition amount appears application Association atoms becomes bismuth British carbon cent Chemical Chemistry coal complete compounds containing copper crystals determined direct effect electric electrode elements ENGINEERS experiments fact give given glass heat hydrogen important increase indicated industry Institute interest iron Laboratory lead less light lines liquid London manufacture Marks material matter means measured meeting Merton House metal method mineral Mines mixture nature Notes obtained Office oxide Patents physical plant possible Post Free precipitate prepared present production properties Published pure quantity reaction reference Research Royal Salisbury Square salts scientific shown Society sodium solution standard structure substance sulphur surface Table temperature theory tion tons Trade United various volume zinc