A Text-Book of Practical Chemistry
A Text-Book of Practical Chemistry
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In our eReader you can find the full English version of the book. Read A Text-Book of Practical Chemistry Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Text-Book of Practical Chemistry
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Evaporate on the toater-bathy moisten the residue with strong hydrochloric acid, dry again, again moisten with hydrochloric acid and set aside for half an hour. Dilute with 150 c.cs. water, boil, filter off the silicic acid, wash it and ignite it wet. Weigh as SiOj.
Note, — If the silica is pink, it contains ferric oxide. If it is grey it contains graphite.
In the first case fuse with fusion mixture. In the second case fuse with fusion mixture and potassium nitrate. Dissolve the melt in water, ...acidify strongly with hydrochloric acid, evaporate on the water-bath and treat as before. (Remember, two filter ashes.) Determination of phosphoms. — It is usual to determine the phosphorus in the same operation. The filtrate from the silica will contain it as phosphoric acid. It is evaporated dry, dissolved in the minimum of nitric acid and pptd.
by Woy's method, page 197.
Hydrofluoric aeid. Penfidd's method, — The fluoride is mixed with ten times its weight of finely powdered and ignited quartz and decomposed in a flask fitted with tap-funnel and delivery tube by heating with strong sul- phuric acid.
What to read after A Text-Book of Practical Chemistry?
You can find similar books in the "Read Also" column, or choose other free books by Hood, George Frederic to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Evaporate on the toater-bathy moisten the residue with strong hydrochloric acid, dry again, again moisten with hydrochloric acid and set aside for half an hour. Dilute with 150 c.cs. water, boil, filter off the silicic acid, wash it and ignite it wet. Weigh as SiOj.
Note, — If the silica is pink, it contains ferric oxide. If it is grey it contains graphite.
In the first case fuse with fusion mixture. In the second case fuse with fusion mixture and potassium nitrate. Dissolve the melt in water, ...acidify strongly with hydrochloric acid, evaporate on the water-bath and treat as before. (Remember, two filter ashes.) Determination of phosphoms. — It is usual to determine the phosphorus in the same operation. The filtrate from the silica will contain it as phosphoric acid. It is evaporated dry, dissolved in the minimum of nitric acid and pptd.
by Woy's method, page 197.
Hydrofluoric aeid. Penfidd's method, — The fluoride is mixed with ten times its weight of finely powdered and ignited quartz and decomposed in a flask fitted with tap-funnel and delivery tube by heating with strong sul- phuric acid.
What to read after A Text-Book of Practical Chemistry?
You can find similar books in the "Read Also" column, or choose other free books by Hood, George Frederic to read onlineMoreLess
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