 | Thomas Bliss Stillman - 1897 - 564 páginas
...and leave a residue C of sand, which dry, ignite and weigh. To determine B boil four or five grams of the clay (previously dried at 100° C.) directly...hydrochloric acid, evaporate to dryness and determine this silica. It represents B or the hydrated silicic acid. Add together the weights of B and C thus... | |
 | Thomas Bliss Stillman - 1897 - 598 páginas
...and leave a residue C of sand, which dry, ignite and weigh. To determine B boil four or five grams of the clay (previously dried at 100° C.) directly...hydrochloric acid, evaporate to dryness and determine this silica. It represents B or the hydrated silicic acid. Add together the weights of B and C thus... | |
 | Richard Kidder Meade - 1901 - 206 páginas
...which dry, ignite, and weigh. To determine (B), boil 4 or 5 grains of clay (previously dried at 1oo° C.) directly with a strong solution of sodium carbonate...subtract the sum from the weight of the first residue (A + B + C). The difference will be the weight of (A) or the silica in combination with the bases of... | |
 | Richard Kidder Meade - 1906 - 422 páginas
...4 or 5 grams of clay (previously dried 1 Cairns' Quantitative Chemical Analysis- page 68. at IOO° C.) directly with a strong solution of sodium carbonate...subtract the sum from the weight of the first residue (Aj-B+C). The difference will be the weight of (A) or the silica in combination with the bases of the... | |
 | Richard Kidder Meade - 1911 - 566 páginas
...and weigh. To determine (B), boil 4 or 5 grams of clay (previously dried at 100° C. ) directly with strong solution of sodium carbonate in a platinum...subtract the sum from the weight of the first residue (A + B + C). The difference will be the weight of (A) or the silica in combination with the bases of... | |
 | Richard Kidder Meade - 1911 - 568 páginas
...and weigh. To determine (B), boil 4 or 5 grams of clay (previously dried at 100° C.) directly with strong solution of sodium carbonate in a platinum...subtract the sum from the weight of the first residue (A + B + C). The difference will be the weight of (A) or the silica in combination with the bases of... | |
 | Crowell & Murray - 1911 - 226 páginas
...mixture of sodium carbonate and potassium nitrate, and the fusion dissolved in hot water. Filter, wash with hot water, acidify the filtrate with hydrochloric acid, evaporate to dryness and bake. Dissolve in hot water and add 10 cc of dilute hydrochloric acid. Filter and dilute the filtrate... | |
 | Crowell & Murray - 1911 - 214 páginas
...mixture of sodium carbonate and potassium nitrate, and the fusion dissolved in hot water. Filter, wash with hot water, acidify the filtrate with hydrochloric acid, evaporate to dryness and bake. Dissolve in hot water and add 10 cc of dilute hydrochloric acid. Filter and dilute the filtrate... | |
 | 1912 - 726 páginas
...dissolved. Allow the precipitate to settle, decant the liquid through a thick filter, and wash the residue with hot water. Acidify the filtrate with hydrochloric acid, evaporate to dryness, and dehydrate silica; add 2 cc Testing of Rubber Goods 8 1 concentrated hydrochloric acid, take up in water,... | |
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C.) directly with strong solution of sodium carbonate in a platinum dish as above, filter and wash thoroughly with hot water. Acidify the filtrate with hydrochloric acid, evaporate to dryness, and determine the silica as usual. It represents (B) or the... 