Select Methods in Chemical Analysis: (chiefly Inorganic) |
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Results 1-5 of 87
Page 7
... dried in the stove . At the end of from twenty to thirty minutes the precipitate is detached from the filter and spread out on a tared watch - glass . It is heated and weighed twice to be certain that the desiccation is complete , and ...
... dried in the stove . At the end of from twenty to thirty minutes the precipitate is detached from the filter and spread out on a tared watch - glass . It is heated and weighed twice to be certain that the desiccation is complete , and ...
Page 9
... dried at 100 ° , and weighed . The weight obtained may be corrected by separating from the filter a part of the dried precipitate and heat- ing it again to 150 ° to 200 ° in a small platinum crucible , weighing before and after , and ...
... dried at 100 ° , and weighed . The weight obtained may be corrected by separating from the filter a part of the dried precipitate and heat- ing it again to 150 ° to 200 ° in a small platinum crucible , weighing before and after , and ...
Page 14
... dried . In either case a considerable amount of calcium sulphide comes into solution , and hence if the solution so obtained be immediately titrated with test acid , more sodium is indicated as present than really has been dissolved out ...
... dried . In either case a considerable amount of calcium sulphide comes into solution , and hence if the solution so obtained be immediately titrated with test acid , more sodium is indicated as present than really has been dissolved out ...
Page 18
... drying gives the quantity of water . Take 1 gramme of this dried material , place it in a glass tube , and pass a current of dry car- bonic acid gas over the substance for about an hour ; dry it again at 110 ° , to drive off any ...
... drying gives the quantity of water . Take 1 gramme of this dried material , place it in a glass tube , and pass a current of dry car- bonic acid gas over the substance for about an hour ; dry it again at 110 ° , to drive off any ...
Page 19
... dried sample is taken , dissolved in water , precipitated with barium chloride ; the precipitate is collected on a tared filter , and after having been washed and dried , the weight of the barium sulphate is deducted from the weight ...
... dried sample is taken , dissolved in water , precipitated with barium chloride ; the precipitate is collected on a tared filter , and after having been washed and dried , the weight of the barium sulphate is deducted from the weight ...
Contents
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387 | |
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93 | |
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295 | |
331 | |
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559 | |
572 | |
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620 | |
622 | |
636 | |
692 | |
702 | |
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Common terms and phrases
acetic acid added alcohol alkaline aluminium ammonia ammonium sulphide amount analysis antimony arsenic assay barium barium chloride beaker bismuth boiling bromine calcium carbonic acid caustic cent chromic acid citron band cobalt colour containing cool copper Crown 8vo crucible cyanide decantation decomposed didymium dilute dissolved distilled dried drops estimation evaporated to dryness excess ferrocyanide filter filtrate flask fused gallium glass grains grammes heat hydrate hydrochloric acid hydrogen ignited insoluble iodide iodine iridium iron lead liquid litre magnesium manganese mercury metals method mineral mixed mixture nickel nitrate nitric acid obtained operation oxalate oxide oxidised permanganate phosphate phosphoric acid platinum porcelain portion potash potassium chlorate powder precipitate present pure reaction redissolved residue ruthenium salt separated sesquioxide silica silver small quantity sodium carbonate soluble solution of potassium sulphate sulphuretted hydrogen sulphuric acid temperature thallium thiosulphate tion titanic acid traces treated tube uranium vols washed water-bath weighed whilst zinc