A System of Instruction in Qualitative Chemical AnalysisJ. Churchill, 1859 - 310 páginas |
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Página 7
... wash it carefully with dilute hydrochloric acid whenever it is intended for use in accurate analyses . With the stronger sorts of paper this may be done by placing the paper cut in circular discs , in a layer of moderate thickness , in ...
... wash it carefully with dilute hydrochloric acid whenever it is intended for use in accurate analyses . With the stronger sorts of paper this may be done by placing the paper cut in circular discs , in a layer of moderate thickness , in ...
Página 8
... wash precipitates with boiling water , and affords also the advantage that it enables the operator to produce an uninterrupted jet of water . The drawing needs no explanation ; the outer end of the tube a is drawn out to a fine point ...
... wash precipitates with boiling water , and affords also the advantage that it enables the operator to produce an uninterrupted jet of water . The drawing needs no explanation ; the outer end of the tube a is drawn out to a fine point ...
Página 29
... wash off every particle of dust , and dry thoroughly . Mix one part of the dry sand intimately with one part of perfectly dry fluor spar in powder ; pour six parts of concentrated sul- phuric acid over the mixture in a strong glass ...
... wash off every particle of dust , and dry thoroughly . Mix one part of the dry sand intimately with one part of perfectly dry fluor spar in powder ; pour six parts of concentrated sul- phuric acid over the mixture in a strong glass ...
Página 31
... wash the bottle repeatedly with water , fill it with that fluid , and keep it for next operation . If you neglect this , the apparatus will speedily become incrusted with crystals of sulphate of protoxide of iron , which is apt to ...
... wash the bottle repeatedly with water , fill it with that fluid , and keep it for next operation . If you neglect this , the apparatus will speedily become incrusted with crystals of sulphate of protoxide of iron , which is apt to ...
Página 40
... Wash the crystals with water containing nitric acid , triturate them with water , add ammonia in excess , and let the mixture digest for some time ; then filter , wash , and dry the white precipitate , and keep it for use . Tests ...
... Wash the crystals with water containing nitric acid , triturate them with water , add ammonia in excess , and let the mixture digest for some time ; then filter , wash , and dry the white precipitate , and keep it for use . Tests ...
Outras edições - Ver tudo
A System of Instruction in Qualitative Chemical Analysis C. Remigius Fresenius Visualização integral - 1859 |
A System of Instruction in Qualitative Chemical Analysis C. Remigius Fresenius Visualização integral - 1859 |
A System of Instruction in Qualitative Chemical Analysis C. Remigius Fresenius Pré-visualização limitada - 2022 |
Palavras e frases frequentes
acetic acid acid solution addition alcohol alkaline earths alumina ammonia antimony arsenic arsenious acid baryta bismuth blowpipe boiling carbonate of soda carbonic acid charcoal chloric acid chloride chloride of ammonium chloride of barium color colorless compounds contains copper crucible crystals cyanide cyanide of potassium decomposed decomposition detection difficultly dilute solutions dissolves readily dryness evaporate examination excess ferrocyanide filter filtrate flame fluid heat hydrate hydrochloric acid hydrogen hydrosulphuric acid ignition insoluble iodine latter lead lime magnesia manganese metallic mixed mixture neutral nickel nitrate of silver nitric acid oxalic acid oxide phosphoric acid platinum portion powder PRECIPITATE IS FORMED protoxide of iron quantity reaction reagent redissolves residue separation sesquioxide sesquioxide of chromium sesquioxide of iron silicic acid solu soluble in water solution of soda solutions of salts strontia substance sulphate sulphide of ammonium sulphuric acid tartaric acid teroxide tersulphide tint tion tube undissolved volatile wash whilst white precipitate yellow
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