Instruction in chemical analysis, quantitative [tr. and] ed. by J.L. Bullock |
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Página 159
... directed in a . But if the acid is of more stable nature ( e . g . , phosphoric acid ) , neu- tralize the free acid present with ammonia until a precipitate begins to form , re - dissolve this again with a drop of hydrochloric acid ...
... directed in a . But if the acid is of more stable nature ( e . g . , phosphoric acid ) , neu- tralize the free acid present with ammonia until a precipitate begins to form , re - dissolve this again with a drop of hydrochloric acid ...
Página 170
... directed § 53 . The lid is removed from the crucible , and the heat maintained at a high degree of intensity , until the weight of the residue remains constant . Care must be taken to prevent reducing gases finding their way into the ...
... directed § 53 . The lid is removed from the crucible , and the heat maintained at a high degree of intensity , until the weight of the residue remains constant . Care must be taken to prevent reducing gases finding their way into the ...
Página 175
... directed § 110 , b . ( Sulphide of nickel . ) The solution obtained contains invariably sulphuric acid ; the amount of the cobalt is determined as directed in the preceding section ( 3. a ) taking care to evaporate the fluid , which ...
... directed § 110 , b . ( Sulphide of nickel . ) The solution obtained contains invariably sulphuric acid ; the amount of the cobalt is determined as directed in the preceding section ( 3. a ) taking care to evaporate the fluid , which ...
Página 195
... directed § 141. Multiply the resulting number by 3 , and deduct the quantity of chloride of sodium so found from that first added ; the difference expresses the quantity equivalent to the silver contained in the analysed compound . This ...
... directed § 141. Multiply the resulting number by 3 , and deduct the quantity of chloride of sodium so found from that first added ; the difference expresses the quantity equivalent to the silver contained in the analysed compound . This ...
Página 208
... directed in c , and add the oxide obtained to the first precipitate . It is also highly advisable not to neglect dissolving the oxide of copper , after weighing , in hydrochloric acid , in order to detect , and , if necessary , estimate ...
... directed in c , and add the oxide obtained to the first precipitate . It is also highly advisable not to neglect dissolving the oxide of copper , after weighing , in hydrochloric acid , in order to detect , and , if necessary , estimate ...
Palavras e frases frequentes
accurate results acid solution alkaline alumina ammonia analysis antimony arsenic acid baryta beaker bichloride of platinum binoxide boiling carbonate of soda carbonic acid Chem chloride of ammonium chloride of potassium chloride of sodium chromate chromic acid cipitate color compounds contains converted cubic centimetres decantation decomposed decomposition Determination dilute dish dissolves dried evaporation excess filter filtrate flask fluid fused glass grammes hydrated hydrochloric acid ignition insoluble in water iodide iodine latter lime magnesia manganese mercury metallic method mixed mixture nickel nitrate nitric acid operation oxalic acid oxide oxide of lead permanganate of potassa phosphate phosphoric acid platinum and chloride porcelain portion prakt precipitate present pure quantity readily red heat residue salt separation sesquioxide of chromium sesquioxide of iron silicic acid soluble solution of chloride strontia substance sulphate sulphide of ammonium sulphuretted hydrogen sulphuric acid teroxide tube volatile volumetrical wash weighed zinc
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