 | William Francis, Henry Croft - Chemistry - 1847 - 512 pages
...sulphur eliminated by decomposition of the excess of hydrosulphate of ammonia had completely separated. The magnesia was precipitated by phosphate of soda and excess of ammonia. Generally twenty-four or forty hours were allowed for complete precipitation. The precipitate was washed with... | |
 | British Association for the Advancement of Science - Science - 1847 - 662 pages
...sulphur separated by decomposition of the excess of hydrosulphate of ammonia had completely separated. The magnesia was precipitated by phosphate of soda and excess of ammonia. Generally twenty-four or forty hours were allowed for complete precipitation. The precipitate was washed with... | |
 | Chemistry - 1847 - 530 pages
...sulphur eliminated by decomposition of the .excess of hydrosulphate of ammonia had completely separated. The magnesia was precipitated by phosphate of soda and excess of ammonia. Generally twenty-four or forty hours were allowed for complete precipitation. The precipitate was washed with... | |
 | William Crookes - Analytical chemistry - 1871 - 500 pages
...into carbonate by ignition, and either weighed as such after evaporation with carbonate of ammonium, or else moistened with sulphuric acid, and, after...excess of acid by heat, weighed as sulphate. 4. The magnesium was precipitated by phosphate of sodium and excess of ammonia. Generally, about 24 hours... | |
 | William Crookes - Analytical chemistry - 1886 - 782 pages
...converted into carbonate by ignition, and either weighed as such after evaporation with ammonium carbonate, or else moistened with sulphuric acid, and, after...excess of acid by heat, weighed as sulphate. 4. The magnesium was precipitated by sodium phosphate and excess of ammonia. Generally, about twenty-four... | |
 | British Association for the Advancement of Science. Meeting - Science - 1847 - 718 pages
...sulphur separated by decomposition of the excess of hydrosulphate of ammonia had completely separated. The magnesia was precipitated by phosphate of soda and excess of ammonia. Generally twenty- four or forty hours were allowed for complete precipitation. The precipitate was washed with... | |
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The solution (6), after precipitation of the manganese, was digested with excess of hydrochloric acid until the sulphur eliminated by decomposition of the .excess of hydrosulphate of ammonia had completely separated. The magnesia was precipitated by phosphate... 