 The filtrate from the ferrous sulphide was acidified strongly with sulphuric acid, heated to the boiling point, and treated with potassium permanganate until its characteristic color appeared. The final products of the action of the permanganate upon...  Bulletin of the United States Geological Survey - Page 28de Geological Survey (U.S.) - 1889Affichage du livre entier - À propos de ce livre
 | American Academy of Arts and Sciences - 1885 - 590 pages
...the conversion of the tartaric acid to formic acid — which is all that is needed in this case — has been accomplished ; but for the sake of greater security the addition of permanganate may be continued until its color shows in the solution. It is well, however, to make use... | |
 | American Academy of Arts and Sciences - 1885 - 602 pages
...the conversion of the tartaric acid to formic acid — which is all that is needed in this case — has been accomplished ; but for the sake of greater security the addition of permanganate may be continued until its color shows in the solution. It is well, however, to make use... | |
 | Frank Wigglesworth Clarke - 1886 - 226 pages
...the conversion of the tartaric acid to formic acid — which is all that is needed in this case — has been accomplished; but for the sake of greater security the addition of permanganate may be continued until its color shows in the solution. It is well, however, to make use... | |
 | Robert Thomas Hill - 1887 - 342 pages
...ammonia in excess and bromine water. The precipitate thus obtained was ignited and weighed as Mn3O4, it being so trifling that solution and reprecipitation...the amount of permanganate theoretically required. A weight of potassium permanganate amounting to ¿wo and a half times the weight of the tartaric acid... | |
 | Edward Hart - 1889 - 496 pages
...reprecipitation as the phosphate was unnecessary. Iron. — The precipitate of ferric, titanic and aluminic hydrates was fused in a little sodium carbonate, the...the amount of permanganate theoretically required. A weight of potassium permanganate amounting to two and a half times the weight of the tartaric acid... | |
 | Edward Hart - 1889 - 494 pages
...first oxidized by bromine, was precipitated by ammonia and weighed as the oxide. Titanic acid.—The filtrate from the ferrous sulphide was acidified strongly...the amount of permanganate theoretically required. A weight of potassium permanganate amounting to two and a half times the weight of the tartaric acid... | |
 | 1889 - 688 pages
...which, re-dissolving readily so long as tartaric acid remains, yields only slowly to the further aâion of the formic acid. When, therefore, manganic hydrate...permanganate may be continued until the appearance of its colour. When the amount of tartaric acid in the solution is known, as should be the case always, a... | |
 | Ira Remsen, Charles August Rouillu - 1886 - 468 pages
...the conversion of the tartaric acid to formic acid — which is all that is needed in this case — has been accomplished ; but for the sake of greater security the addition of permanganate may be continued until its color shows in the solution. It is well, however, to make use... | |
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